From Longman Dictionary of Contemporary Englishcaponca‧pon /ˈkeɪpən $ -pɑːn, -pən/ noun [countable] TADFa male chicken that has had its sex organs removed to make it grow big and fat
Examples from the Corpus
capon• A capon is a surgically unsexed male chicken, usually less than eight months old.• Christmas dinner is built around horsd'oeuvres, various kinds of pasta, capon and turkey.Origin capon (900-1000) Old North French Latin capo 