assistant referee
US /əˌsɪs.tənt ˈref.ə.ri/
UK /əˌsɪs.tənt ˈref.ə.ri/

1.
부심, 선심
an official who assists the referee in a soccer match, typically by indicating when the ball is out of play or when a player is offside
:
•
The assistant referee raised the flag for offside.
부심이 오프사이드 깃발을 들었다.
•
The decision was confirmed by the assistant referee.
그 결정은 부심에 의해 확인되었다.