1.  The terminal part of the leg of man or an animal; esp., the part below the ankle or wrist; that part of an animal upon which it rests when standing, or moves. See Manus, and Pes. [1913 Webster]

2.  The muscular locomotive organ of a mollusk. It is a median organ arising from the ventral region of body, often in the form of a flat disk, as in snails. See Illust. of Buccinum. [1913 Webster]

3.  That which corresponds to the foot of a man or animal; as, the foot of a table; the foot of a stocking. [1913 Webster]

4.  The lowest part or base; the ground part; the bottom, as of a mountain, column, or page; also, the last of a row or series; the end or extremity, esp. if associated with inferiority; as, the foot of a hill; the foot of the procession; the foot of a class; the foot of the bed; ; the foot of the page. [1913 Webster]
"And now at foot
Of heaven's ascent they lift their feet." [1913 Webster]

5.  Fundamental principle; basis; plan; -- used only in the singular. [1913 Webster]
"Answer directly upon the foot of dry reason." [1913 Webster]

6.  Recognized condition; rank; footing; -- used only in the singular. [1913 Webster]
"As to his being on the foot of a servant." [1913 Webster]

7.  A measure of length equivalent to twelve inches; one third of a yard. See Yard. [1913 Webster]
" This measure is supposed to be taken from the length of a man's foot. It differs in length in different countries. In the United States and in England it is 304.8 millimeters." [1913 Webster]

8.  Soldiers who march and fight on foot; the infantry, usually designated as the foot, in distinction from the cavalry. Milton. [1913 Webster]

9.  A combination of syllables consisting a metrical element of a verse, the syllables being formerly distinguished by their quantity or length, but in modern poetry by the accent. [1913 Webster]

10.  The lower edge of a sail. [1913 Webster]
" Foot is often used adjectively, signifying of or pertaining to a foot or the feet, or to the base or lower part. It is also much used as the first of compounds." [1913 Webster]

1.  To tread to measure or music; to dance; to trip; to skip. Dryden. [1913 Webster]

2.  To walk; -- opposed to ride or fly. Shak. [1913 Webster]

1.  To kick with the foot; to spurn. Shak. [1913 Webster]

2.  To set on foot; to establish; to land. [1913 Webster]
"What confederacy have you with the traitors
Late footed in the kingdom?" [1913 Webster]

3.  To tread; as, to foot the green. Tickell. [1913 Webster]

4.  To sum up, as the numbers in a column; -- sometimes with up; as, to foot (or foot up) an account. [1913 Webster]

5.  To seize or strike with the talon. Shak. [1913 Webster]

6.  To renew the foot of, as of a stocking. Shak. [1913 Webster]
"If you are for a merry jaunt, I'll try, for once, who can foot it farthest." [1913 Webster]

foot, n. & v.
--n. (pl. feet)
1 a the lower extremity of the leg below the ankle. b the part of a sock etc. covering the foot.
2 a the lower or lowest part of anything, e.g. a mountain, a page, stairs, etc. b the lower end of a table. c the end of a bed where the user's feet normally rest.
3 the base, often projecting, of anything extending vertically.
4 a step, pace, or tread; a manner of walking (fleet of foot).
5 (pl. feet or foot) a unit of linear measure equal to 12 inches (30.48 cm).
6 Prosody a a group of syllables (one usu. stressed) constituting a metrical unit. b a similar unit of speech etc.
7 Brit. hist. infantry (a regiment of foot).
8 Zool. the locomotive or adhesive organ of invertebrates.
9 Bot. the part by which a petal is attached.
10 a device on a sewing-machine for holding the material steady as it is sewn.
11 (pl. foots) a dregs; oil refuse. b coarse sugar.
--v.tr.
1 (usu. as foot it) a traverse (esp. a long distance) by foot. b dance.
2 pay (a bill, esp. one considered large).

Idiom:
at a person's feet as a person's disciple or subject. feet of clay a fundamental weakness in a person otherwise revered. foot-and-mouth disease a contagious viral disease of cattle etc. foot-fault (in lawn tennis) incorrect placement of the feet while serving. foot-pound the amount of energy required to raise
1 lb.
a distance of
1 foot. foot-pound-second system a system of measurement with these as basic units. foot-rot a bacterial disease of the feet in sheep and cattle. foot-rule a ruler 1 foot long. foot-soldier a soldier who fights on foot. get one's feet wet begin to participate. have one's (or both) feet on the ground be practical. have a foot in the door have a prospect of success. have one foot in the grave be near death or very old. my foot! int. expressing strong contradiction. not put a foot wrong make no mistakes. off one's feet so as to be unable to stand, or in a state compared with this (was rushed off my feet). on foot walking, not riding etc. put one's best foot forward make every effort; proceed with determination. put one's feet up colloq. take a rest.
put one's foot down colloq.
1 be firmly insistent or repressive.
2 accelerate a motor vehicle. put one's foot in it colloq. commit a blunder or indiscretion. set foot on (or in) enter; go into. set on foot put (an action, process, etc.) in motion. under one's feet in the way. under foot on the ground.

Derivative:
footed adj. (also in comb.). footless adj.

Etymology:
OE fot f. Gmc

N  poetry, poetics, poesy, Muse, Calliope, tuneful Nine, Parnassus, Helicon, Pierides, Pierian spring, versification, rhyming, making verses, prosody, orthometry, poem, epic, epic poem, epopee, epopoea, ode, epode, idyl, lyric, eclogue, pastoral, bucolic, dithyramb, anacreontic, sonnet, roundelay, rondeau, rondo, madrigal, canzonet, cento, monody, elegy, amoebaeum, ghazal, palinode, dramatic poetry, lyric poetry, opera, posy, anthology, disjecta membra poetae song, ballad, lay, love song, drinking song, war song, sea song, lullaby, music, nursery rhymes, doggerel, Hudibrastic verse, prose run mad, macaronics, macaronic verse, leonine verse, runes, canto, stanza, distich, verse, line, couplet, triplet, quatrain, strophe, antistrophe, verse, rhyme, assonance, crambo, meter, measure, foot, numbers, strain, rhythm, accentuation, dactyl, spondee, trochee, anapest, hexameter, pentameter, Alexandrine, anacrusis, antispast, blank verse, ictus, elegiacs, elegiac verse, elegaic meter, elegaic poetry, poet, poet laureate, laureate, bard, lyrist, scald, skald, troubadour, trouvere, minstrel, minnesinger, meistersinger, improvisatore, versifier, sonneteer, rhymer, rhymist, rhymester, ballad monger, runer, poetaster, genus irritabile vatum, poetic, poetical, lyric, lyrical, tuneful, epic, dithyrambic, metrical, a catalectin, elegiac, iambic, trochaic, anapestic, amoebaeic, Melibean, skaldic, Ionic, Sapphic, Alcaic, Pindaric, a poem round and perfect as a star, Dichtung und Wahrheit, furor poeticus, his virtues formed the magic of his song, I do but sing because I must, I learnt life from the poets, licentia vatum, mutum est pictura poema, O for a muse of fire!, sweet food of sweetly uttered knowledge, the true poem is the poet's mind, Volk der Dichter und Denker, wisdom married to immortal verse.

N  length, longitude, span, mileage, distance, line, bar, rule, stripe, streak, spoke, radius, lengthening, prolongation, production, protraction, tension, tensure, extension, line, nail, inch, hand, palm, foot, cubit, yard, ell, fathom, rood, pole, furlong, mile, league, chain, link, arpent, handbreadth, jornada, kos, vara, astronomical unit, AU, light- year, parsec, nanometer, nm, micron, micrometer, millimicron, millimeter, mm, centimeter, cm, meter, kilometer, km, pedometer, perambulator, scale, long, longsome, lengthy, wiredrawn, outstretched, lengthened, sesquipedalian, interminable, no end of, macrocolous, linear, lineal, longitudinal, oblong, as long as my arm, as long as today and tomorrow, unshortened &c (shorten), lengthwise, at length, longitudinally, endlong, along, tandem, in a line, in perspective, from end to end, from stem to stern, from head to foot, from the crown of the head to the sole of the foot, from top to toe, fore and aft.

N  base, basement, plinth, dado, wainscot, baseboard, mopboard, bedrock, hardpan, foundation, substructure, substratum, ground, earth, pavement, floor, paving, flag, carped, ground floor, deck, footing, ground work, basis, hold, bilge, bottom, nadir, foot, sole, toe, hoof, keel, root, centerboard, bottom, undermost, nethermost, fundamental, founded on, based on, grounded on, built on.

amp'8are foot, animal foot, athlete's foot, australian hare's foot, bear's foot, bird's foot, bird's foot clover, bird's foot trefoil, board foot, canary island hare's foot fern, candle foot, cat's foot, cleft foot, cloven foot, crow's foot, cubic foot, dove's foot geranium, flat foot, foot brake, foot candle, foot doctor, foot dragging, foot guards, foot lever, foot pedal, foot pound, foot poundal, foot race, foot rot, foot rule, foot soldier, foot ton, foot traffic, foot up, foot valve, fossorial foot, goat's foot, hand and foot, heterodactyl foot, horse's foot, human foot, immersion foot, invertebrate foot, lion's foot, lobate foot, metrical foot, square foot, trench foot, tube foot, vertebrate foot, webbed foot, white-man's foot, whiteman's foot, zygodactyl foot

1.  trefoil(n = noun.plant) medic, medick - any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves;
is a kind of herb, herbaceous plant
is a member of genus medicago, medicago
has particulars: medicago arborea, moon trefoil, medicago falcata, sickle alfalfa, sickle lucerne, sickle medick, calvary clover, medicago echinus, medicago intertexta, black medick, hop clover, medicago lupulina, nonesuch clover, yellow trefoil, alfalfa, lucerne, medicago sativa

2.  trefoil(n = noun.plant) clover - a plant of the genus Trifolium;
is a kind of herb, herbaceous plant
is a member of genus trifolium, trifolium
has particulars: alpine clover, trifolium alpinum, hop clover, lesser yellow trefoil, shamrock, trifolium dubium, crimson clover, italian clover, trifolium incarnatum, purple clover, red clover, trifolium pratense, buffalo clover, trifolium reflexum, trifolium stoloniferum, dutch clover, shamrock, trifolium repens, white clover

3.  trefoil(n = noun.artifact) - an architectural ornament in the form of three arcs arranged in a circle;
is a kind of architectural ornament

1.  Any plant of the genus Trifolium, which includes the white clover, red clover, etc.; -- less properly, applied also to the nonesuch, or black medic. See Clover, and Medic. [1913 Webster]

2.  An ornamental foliation consisting of three divisions, or foils. [1913 Webster]

3.  A charge representing the clover leaf. [1913 Webster]

trefoil, n. & adj.
--n.
1 any leguminous plant of the genus Trifolium, with leaves of three leaflets and flowers of various colours, esp. clover.
2 any plant with similar leaves.
3 a three-lobed ornamentation, esp. in tracery windows.
4 a thing arranged in or with three lobes.
--adj. of or concerning a three-lobed plant, window tracery, etc.

Derivative:
trefoiled adj. (also in comb.).

Etymology:
ME f. AF trifoil f. L trifolium (as TRI-, folium leaf)

N  triality, trinity, triunity, three, triad, triplet, trey, trio, ternion, leash, shamrock, tierce, spike-team, trefoil, triangle, trident, triennium, trigon, trinomial, trionym, triplopia, tripod, trireme, triseme, triskele, triskelion, trisula, third power, cube, cube root, three, triform, trinal, trinomial, tertiary, ternary, triune, triarch, triadie, triple, tri-, tris-, tria juncta in uno.

bean trefoil, bird's foot trefoil, lesser yellow trefoil, marsh trefoil, moon trefoil, prairie bird's-foot trefoil, prairie trefoil, stinking bean trefoil, tick trefoil, trefoil arch, water trefoil, yellow trefoil