- [countable]
the smooth shiny brown nut of the horse chestnut tree 七叶树果 
- conkers[uncountable]
a children’s game played with conkers on strings, in which two players take turns to try to hit and break each other’s conker 康克戏（儿童游戏，双方用系在绳上的七叶果轮流互击，以击破对方的七叶果）
Word Originmid 19th cent. (a dialect word denoting a snail shell, with which the game, or a form of it, was originally played): perhaps from conch, but associated with (and frequently spelled) conquer in the 19th and early 20th cents: an alternative name was conquerors.