question (someone, typically a soldier or spy) about a completed mission or undertaking.
the government debriefed him over a span of four years
question,quiz,interview,examine,cross-examine,interrogate,probe,sound out,put questions to,ask questions of,grill,pump,give the third degree to,put through the third degree,put through the wringer,put through the mangle,put the screws on
a series of questions about a completed mission or undertaking.
in the debrief, Gary gave his assessment of the trip and his performance