Definition of rock paper scissors in English:

rock paper scissors

(also rock-paper-scissors, rock, paper, scissors, rock, paper and scissors)

noun

US
  • A game (used especially to settle petty disputes or as a tiebreaker) in which, at an agreed signal, each participant makes a gesture with one hand representing either a rock, paper, or a pair of scissors, the winner being determined according to an established scheme.

Origin

1940s. In some forms from rock + paper + and + scissors.

Pronunciation

rock paper scissors

/ˌrɒk ˌpeɪpə ˈsɪzəz/