referees

英 [ˌrefəˈriːz]

美 [ˌrefəˈriːz]

n. (某些体育比赛的)裁判，裁判员; 介绍人; 推荐人; 仲裁员; 调解人
v. 担任裁判; 裁判; 审阅，鉴定(专业性强的文章)
referee的第三人称单数和复数

柯林斯词典

（比赛的）裁判员
Therefereeis the official who controls a sports event such as a football game or a boxing match.
VERB 为…担任裁判；执法（比赛）
When someonerefereesa sports event or contest, they act as referee.
1. The match will be refereed by Derek Bevan from Wales...
  这场比赛将由来自威尔士的德里克·贝文执法。
2. Vautrot has refereed in two World Cups.
  沃特罗特执法过两届世界杯。
（求职等时的）推荐人，介绍人，证明人
Arefereeis a person who gives you a reference, for example when you are applying for a job.

in AM, use 美国英语用 reference