ref

Từ điển Oxford Advanced Learner 8th

ref [ref refs] noun, verb BrE [ref] NAmE [ref] (informal)
noun = ↑referee
•The game's not over till the ref blows the whistle.

Word Origin:
late 19th cent.: abbreviation.
 
verb (-ff-)~ sth = ↑referee
•The game was badly reffed.
•He reffed our first international game.
Verb forms:

Word Origin:
late 19th cent.: abbreviation.