Before submitting the paper, the author checked all REFs to ensure they were correctly formatted.

The Refs reviewed the replay before announcing the final call.

The supervisors announced we'd have refs at 2 p.m., so make sure your paperwork's up to date.

The refs reviewed the disputed goal before making their final decision.

She refs high school soccer matches on weekends.

Ref arrived at the town hall for the genealogy meeting.

She's reffing the youth soccer game this afternoon, so she won't make it to the meeting.

Despite being out of practice, Jordan reffed the community basketball game and earned praise for keeping control.

The ref blew the whistle, calling a penalty against the striker.

Under the statute, the Ref. of crude oil must meet specified emissions limits before sale.