Collins COBUILD Advanced Learner's English Dictionary - chestnut

(chestnuts) 1. A chestnut or chestnut tree is a tall tree with broad leaves. N-COUNT see also horse chestnut 2. Chestnuts are the reddish-brown nuts that grow on chestnut trees. You can eat chestnuts. N-COUNT 3. Something that is chestnut is dark reddish-brown in colour. ...a woman with chestnut hair. ...a chestnut mare. COLOUR