1. stop doing what one is doing; - Example: "At midnight, the student decided to call it quits and closed his books" [syn: call it quits, call it a day]
WordNet (r) 3.0 (2006):
call it quits
v 1: stop doing what one is doing; "At midnight, the student
decided to call it quits and closed his books" [syn: call
it quits, call it a day]