referee’s assistant
noun /ˌrefəriːz əˈsɪstənt/
/ˌrefəriːz əˈsɪstənt/
(also assistant referee)
- (in football (soccer)) the official name for a linesman (= an official who helps the referee, for example in deciding whether or where a ball has passed outside the field of play)Topics Sports: ball and racket sportsb2