(Verb) 1. To keep watch; especially : to supervise students at an examination

2. supervise, monitor

In Context

“Since I have so often been asked about the mechanics of the job [of restaurant reviewer], it seems worth mentioning a few here…. In places designed for group eating, I often made up a group, though I tended to invigilate what was ordered: duplicate orders were banned and no one got to say, ‘I think I’ll have a steak.'”

Peter Calder, The New Zealand Herald, 24 Dec. 2017