Formerly chesten [[nut]], from Middle English chesten, Middle English chesteyne, chasteine, from Old English ċisten and reinforced by Old French chastaigne, both from Latin castānea, from Ancient Greek καστάνεια.

• (British, America) IPA: /ˈt͡ʃɛs.nʌt/, /ˈt͡ʃɛst.nʌt/

chestnut

1. A tree or shrub of the genus Castanea.

   Synonyms: chestnut tree

2. A nut of this tree or shrub.
3. (uncountable) A dark, reddish-brown colour, as seen on the fruit of the chestnut tree.

    

4. A reddish-brown horse.
   • 1871, Baily's Magazine of Sports & Pastimes, volume 20, page 308:

     Lord Carington […] led the way with his chestnuts […]

5. (uncountable) Wood of a chestnut tree.
6. (figurative) An old joke; a worn-out meme, phrase, ploy, etc. so often repeated as to have grown tiresome or ineffective (often in the phrase "old chestnut").

   Synonyms: cliché, platitude

7. A round or oval horny plate found on the inner side of the leg of a horse or other animal, similar to a birthmark on a human.

   Synonyms: night eye

8. (UK) The horse-chestnut.

• French: châtaigne, marron
• German: Kastanie, Esskastanie, Edelkastanie
• Italian: castagna
• Portuguese: castanha
• Russian: кашта́н
• Spanish: castaña

• French: marron, châtain
• German: Kastanienbraun
• Italian: castano
• Portuguese: castanho
• Russian: кашта́новый
• Spanish: castaño, marrón

• German: Fuchs
• Italian: castano
• Portuguese: castanho
• Russian: гнедо́й

• French: châtaigner, marronnier
• German: Kastanie
• Italian: castagneto
• Russian: кашта́н

chestnut (not comparable)

1. Of a deep reddish-brown colour, like that of a chestnut.

   chestnut hair

• French: marron, châtain
• German: kastanienbraun
• Italian: castano (of hair)
• Portuguese: castanho, marrom
• Russian: кашта́новый
• Spanish: castaño, marrón

• castanet

1. Surname.