conker
noun
conk·er ˈkäŋ-kər 
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
Word History
Etymology
conch + -er entry 2, from the original use of a snail shell on a string in the game
First Known Use
circa 1886, in the meaning defined at sense 1
- reduce someone to tears
- reduce something to ashes
- reduce to ashes
- reduce to silence
- reduce to tears
- reduceable
- reduced
- reduced circumstances
- reduced hematin
- reduced iron
- reduced oil
- reduced rate contribution clause
- reducement
- reducer
- reducer sleeve
- reducers
- reduces
- reducibilities
- reducibility
- reducible
- reducible polynomial
- reducibly
- reducing
- reducing agent
- reducing coupling