Referee is important component of basketball. He is the judge in the basketball game.

裁判员是篮球运动的重要组成部分，是篮球比赛的法官。

youdao

University during the college basketball game, I have to play referee, referee.

大学期间，学院的篮球比赛，本人都担当裁判、主裁判。

youdao

So now we have a situation, to listen to the Chicken Littles, where the very integrity of the National Basketball Association is being threatened because one lousy, rotten referee apparently tried to manipulate game scores.

NPR: Gambling on the NBA, Oh My!