Other forms: chestnuts
A chestnut is the glossy brown nut that falls in autumn inside a spiky green case. Split the shell after roasting and the inside is soft, sweet and slightly floury — a paper bag of hot chestnuts by the station, chestnut stuffing at Christmas.
It is a colour too, a warm reddish brown: chestnut hair, chestnut leather. In horse talk the word goes one step further and names the animal itself — she rides a tall chestnut with a white blaze. The trap is the horse chestnut, a completely different tree; those are conkers, they are for string and playgrounds, and eating them will make you ill. And an old chestnut is a joke or story repeated so many times that everybody groans before the end — no nuts involved.
1nounchestnutA shiny brown edible nut, or the tree that produces it.~55%
“We roasted the chestnuts on a tray until the shells split.”
2adjectivecolourOf a warm reddish-brown colour.~27%
“Her chestnut hair had gone grey at the temples.”
3nounhorseA horse with a reddish-brown coat.~18%
“The chestnut in the far field came over for an apple.”
Shares are an estimate: a language model read 11 sentences found in the wild and placed 11 of them on a sense — a count of our sample, not a measurement of English.
Chestnut is Latin castanea with an English nut added for safety. The Latin came from Ancient Greek κάστανα, 'sweet chestnut', and reached English through Old French chastaigne and Middle English chesten. For a while the tree was simply the chesten; later speakers stuck nut on the end in case anyone missed the point. Castanet is the same Latin word arriving by a different road.
Ancient Greek
κᾰστᾰ́νειᾰ
Latin
castanea — chestnut tree; fruit of this tree
Old French
chastaigne,chastaine
Middle English
chesten
English, today
chestnut
Built from
From chesten + nut. The is a chesten. Chesten is a late variant of chesteine obsolete, from Middle English chesten, chesteine, chasteine, chesteyne (“chestnut tree (Castanea sativa); fruit of this tree; wood of this tree”), from Old French chastaigne,chastaine (French châtaigne), from Latin castanea (“chestnut tree; fruit of this tree”) (whence Old English ċisten), from Ancient Greek κᾰστᾰ́νειᾰ, a variant of κᾰ́στᾰνᾰ (“sweet chestnut”); for further etymology, see that entry. a doublet of castanet. cliché (“joke, phrase, etc., which has been repeated so often as to have grown ineffective or tiresome”) may refer to an 1816 play, The Broken Sword, by William Dimond (1781 – 1837), in which one character begins to relate a story in which a boy slips down from a cork tree, and another interrupts him to say that he had previously repeated the story many times, and always mentioned a chestnut tree.{{cite book|author=w:William Dimond|title=The Broken Sword, a Grand Melo-drama,Interspersed with Songs, Chorusses, &c. [...] As Performed at the Theatre-Royal, Covent-Garden, with Universal Applause.|location=London|publisher=Printed and published by J. Barker, Dramatic Repository,Great Russell-Street, Covent-Garden.|year=1816|section=Act I|page=13|pageurl=https://archive.org/details/brokenswordgrand00dimorich/page/13/mode/1up|oclc=6342243|passage=
Etymology from Wiktionary, CC BY-SA