conker
/ˈkɑŋkər/
noun
- The shiny brown nut of the horse chestnut tree, often used in a children's game where two nuts are tied to strings and hit against each other until one breaks.
- He polished his conker until it was smooth and shiny.
- Her conker won the championship after cracking three opponents' nuts.
- The children collected conkers in the park to play the game at school.
- The game played with conkers, popular among children in the UK.
- She learned how to play conker from her older brother.
- They played conker during recess every autumn.
- The school held a conker tournament with prizes for the winner.