Definition of fives in English:

fives

plural noun

  • [treated as singular] A game, played especially in the UK, in which a ball is hit with a gloved hand or a bat against the walls of a court with three walls (Eton fives) or four walls (Rugby fives)

Origin

Mid 17th century: plural of five used as a singular noun; the significance is unknown.

Pronunciation:

fives

/fīvz/