conker

noun
conk·​er | \ ˈkäŋ-kər How to pronounce conker (audio) \

Definition of conker

1 : a horse chestnut especially when used in conkers
2 conkers plural : a game in which each player swings a horse chestnut on a string to try to break one held by the opponent

First Known Use of conker

circa 1886, in the meaning defined at sense 1

History and Etymology for conker

conch + -er entry 2, from the original use of a snail shell on a string in the game

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