- a horse chestnut.
- the hollowed-out shell of a horse chestnut.
- conkers, a game in which a child swings a horse chestnut on a string in an attempt to break that of another player.
Origin of conker
- (functioning as singular) British a game in which a player swings a horse chestnut (conker), threaded onto a string, against that of another player to try to break it
- an informal name for horse chestnut (def. 2)
Word Origin and History for conkers
"child's game played with horse chestnuts," originally with snail shells, 1847, probably a variant of conquer. The goal was to break the other player's item by hitting it with yours.
"snail shell," also "horse chestnut," from children's game of conkers (q.v.).