■ plural noun [treated as sing. ] (in the UK) a ball game similar to baseball, in which players run round a circuit of bases after hitting the ball with a cylindrical wooden bat, scoring a rounder if all four bases are reached before the ball is fielded.
ROUNDERS
Meaning of ROUNDERS in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004