1.  left(n = noun.location) - location near or direction toward the left side; i.e. the side to the north when a person or object faces east; "she stood on the left"
Antonym: right

2.  left(n = noun.group) left wing - those who support varying degrees of social or political or economic change designed to promote the public welfare;

3.  left(n = noun.body) left hand - the hand that is on the left side of the body; "jab with your left"

4.  left(n = noun.artifact) left field, leftfield - the piece of ground in the outfield on the catcher's left; "the batter flied out to left"

5.  left(n = noun.act) - a turn toward the side of the body that is on the north when the person is facing east; "take a left at the corner"

1.  left(a = adj.all) - being or located on or directed toward the side of the body to the west when facing north; "left center field"; "my left hand"; "the left bank of a river is bank on your left side when you are facing downstream"
Antonym: right

2.  left(s = adj.all) left over, leftover, odd, remaining, unexpended - not used up; "leftover meatloaf"; "saved the remaining sandwiches for supper"; "she had a little money left over so she went to a movie"; "some odd dollars left"; "unexpended provisions"

3.  left(s = adj.all) left-hand - intended for the left hand; "I rarely lose a left-hand glove"

4.  left(a = adj.all) - of or belonging to the political or intellectual left;
Antonym: center, right

   left(r = adv.all) - toward or on the left; also used figuratively; "he looked right and left"; "the political party has moved left"
Antonym: right

   of Leave. [1913 Webster]

1.  Of or pertaining to that side of the body in man on which the muscular action of the limbs is usually weaker than on the other side; -- opposed to right, when used in reference to a part of the body; as, the left hand, or arm; the left ear. Also said of the corresponding side of the lower animals. [1913 Webster]

2.  Situated so that the left side of the body is toward it; as, the left side of a deliberative meeting is that to the left of the presiding officer; the left wing of an army is that to the left of the center to one facing an enemy. [Webster 1913 Suppl.]

1.  That part of surrounding space toward which the left side of one's body is turned; as, the house is on the left when you face North. [1913 Webster]

2.  Those members of a legislative assembly (as in France) who are in the opposition; the advanced republicans and extreme radicals. They have their seats at the left-hand side of the presiding officer. See Center, and Right. [1913 Webster]

left, adj., adv., & n. (opp. RIGHT).
--adj.
1 on or towards the side of the human body which corresponds to the position of west if one regards oneself as facing north.
2 on or towards the part of an object which is analogous to a person's left side or (with opposite sense) which is nearer to an observer's left hand.
3 (also Left) Polit. of the Left.
--adv. on or to the left side.
--n.
1 the left-hand part or region or direction.
2 Boxing a the left hand. b a blow with this.
3 a (often Left) Polit. a group or section favouring radical socialism (orig. the more radical section of a continental legislature, seated on the president's left); such radicals collectively. b the more advanced or innovative section of any group.
4 the side of a stage which is to the left of a person facing the audience.
5 (esp. in marching) the left foot.
6 the left wing of an army.

Idiom:
have two left feet be clumsy. left and right = right and left. left bank the bank of a river on the left facing downstream. left bower see BOWER(3). left field Baseball the part of the outfield to the left of the batter as he or she faces the pitcher. left hand
1 the hand of the left side.
2 (usu. prec. by at, on, to) the region or direction on the left side of a person.
left-hand adj.
1 on or towards the left side of a person or thing (left-hand drive).
2 done with the left hand (left-hand blow).
3 a (of rope) twisted counter-clockwise. b (of a screw) = LEFT-HANDED. left turn a turn that brings one's front to face as one's left side did before.
left wing
1 the radical or socialist section of a political party.
2 the left side of a football etc. team on the field.
3 the left side of an army. left-wing adj. socialist, radical. left-winger a person on the left wing. marry with the left hand marry morganatically (see LEFT-HANDED).

Derivative:
leftish adj.

left, past and past part. of LEAVE(1).

N  remainder, residue, remains, remanent, remnant, rest, relic, leavings, heeltap, odds and ends, cheesepairings, candle ends, orts, residuum, dregs, refuse, stubble, result, educt, fag-end, ruins, wreck, skeleton, stump, alluvium, surplus, overplus, excess, balance, complement, superplus, surplusage, superfluity, survival, survivance, remaining, left, left behind left over, residual, residuary, over, odd, unconsumed, sedimentary, surviving, net, exceeding, over and above, outlying, outstanding, cast off, superfluous.

N  relinquishment, abandonment, desertion, defection, secession, withdrawal, cave of Adullam, nolle prosequi, discontinuance, renunciation, abrogation, resignation, desuetude, cession, unpursued, relinquished, relinquishing, Int, avast!, aufgeschoben ist nicht aufgehoben, entbehre gern was du nicht hast, relinquishment, abandonment, renunciation, expropriation, dereliction, cession, surrender, dispensation, quitclaim deed, resignation, riddance, derelict, foundling, jetsam, waif, discards, culls, rejects, garbage, refuse, rubbish, relinquished, cast off, derelict, unowned, unappropriated, unculled, left, Int, away with!.

N  sinistrality, left, left hand, a gauche, sinister, nearside, larboard, port, left-handed, sinister, sinistral, sinistrorsal, sinistrorse, sinistrous, laevo-, sinistrally, sinistrously.