1.  chestnut(n = noun.plant) - wood of any of various chestnut trees of the genus Castanea;
is a kind of wood

2.  chestnut(n = noun.plant) chestnut tree - any of several attractive deciduous trees yellow-brown in autumn; yield a hard wood and edible nuts in a prickly bur;
is a kind of tree
has parts: chestnut
is a member of castanea, genus castanea
has particulars: american chestnut, american sweet chestnut, castanea dentata, castanea sativa, european chestnut, spanish chestnut, sweet chestnut, castanea mollissima, chinese chestnut, castanea crenata, japanese chestnut, allegheny chinkapin, castanea pumila, chinquapin, dwarf chestnut, eastern chinquapin, castanea ozarkensis, chinquapin, ozark chinkapin, ozark chinquapin

3.  chestnut(n = noun.food) - edible nut of any of various chestnut trees of the genus Castanea;
is a kind of edible nut
is a part of chestnut, chestnut tree

4.  chestnut(n = noun.attribute) - the brown color of chestnuts;
is a kind of brown, brownness
Derived form adjective chestnut₁

5.  chestnut(n = noun.animal) - a small horny callus on the inner surface of a horse's leg;
is a kind of callus

6.  chestnut(n = noun.animal) - a dark golden-brown or reddish-brown horse;
is a kind of equus caballus, horse

   chestnut(s = adj.all) - (of hair or feathers) of a golden brown to reddish brown color; "a chestnut horse"; "chestnut hair"
Derived form noun chestnut₄

1.  The edible nut of a forest tree (Castanea vesce) of Europe and America. Commonly two or more of the nuts grow in a prickly bur. [1913 Webster]

2.  The tree itself, or its light, coarse-grained timber, used for ornamental work, furniture, etc. [1913 Webster]

3.  A bright brown color, like that of the nut. [1913 Webster]

4.  The horse chestnut (often so used in England). [1913 Webster]

5.  One of the round, or oval, horny plates on the inner sides of the legs of the horse, and allied animals. [1913 Webster]

6.  An old joke or story. [1913 Webster]

   Of or pertaining of a chestnut; of a reddish brown color; as, chestnut curls. [1913 Webster]

chestnut, n. & adj.
--n.
1 a a glossy hard brown edible nut. b the tree Castanea sativa, bearing flowers in catkins and nuts enclosed in a spiny fruit. Also called Spanish chestnut or sweet chestnut.
2 any other tree of the genus Castanea.
3 = horse chestnut.
4 (in full chestnut-wood) the heavy wood of any chestnut tree.
5 a horse of a reddish-brown or yellowish-brown colour.
6 colloq. a stale joke or anecdote.
7 a small hard patch on a horse's leg.
8 a reddish-brown colour.
--adj. of the colour chestnut.

Idiom:
liver chestnut a dark kind of chestnut horse.

Etymology:
obs. chesten f. OF chastaine f. L castanea f. Gk kastanea

N  brown, bister ocher, sepia, Vandyke brown, brown, bay, dapple, auburn, castaneous, chestnut, nut-brown, cinnamon, russet, tawny, fuscous, chocolate, maroon, foxy, tan, brunette, whitey brown, fawn-colored, snuff-colored, liver-colored, brown as a berry, brown as mahogany, brown as the oak leaves, khaki, sun-burnt, tanned.

N  news, information, piece of news, budget of news, budget of information, intelligence, tidings, word, advice, aviso, message, dispatch, despatch, telegram, cable, marconigram, wire, communication, errand, embassy, report, rumor, hearsay, on dit, flying rumor, news stirring, cry, buzz, bruit, fame, talk, oui dire, scandal, eavesdropping, town tattle, table talk, tittle tattle, canard, topic of the day, idea afloat, bulletin, fresh news, stirring news, glad tidings, flash, news just in, on-the-spot coverage, live coverage, old story, old news, stale news, stale story, chestnut, narrator, newsmonger, scandalmonger, talebearer, telltale, gossip, tattler, journalism, media, news media, the press, the information industry, newspaper, magazine, tract, journal, gazette, publication, radio, television, ticker (electronic information transmission), United Press International, UPI, Associated Press, AP, The Dow Jones News Service, DJ, The New York Times News Service, NYT, Reuters, TASS, The Nikkei, newscaster, newsman, newswoman, reporter, journalist, correspondent, foreign correspondent, special correspondent, war correspondent, news team, news department, anchorman, anchorwoman, sportscaster, weatherman, press secretary, public relations department, public relations man, many-tongued, rumored, publicly rumored, currently rumored, currently reported, rife, current, floating, afloat, going about, in circulation, in every one's mouth, all over the town, in progress, live, on the spot, in person, as the story goes, as the story runs, as they say, it is said, by telegraph, by wireless, airy tongues that syllable men's names, what's up?, what's the latest?, what's new?, what's the latest poop?.

american chestnut, american sweet chestnut, australian chestnut, chestnut blight, chestnut canker, chestnut oak, chestnut tree, chinese chestnut, chinese water chestnut, dwarf chestnut, european chestnut, horse chestnut, japanese chestnut, liver chestnut, moreton bay chestnut, oak chestnut, rose chestnut, spanish chestnut, swamp chestnut oak, sweet chestnut, water chestnut, water chestnut plant, yellow chestnut oak