Cop  slang —n. 1 police officer. 2 capture or arrest (it's a fair cop). —v. (-pp-) 1 catch or arrest (an offender). 2 receive, suffer. 3 take, seize.  cop it get into trouble; be punished. Cop out 1 withdraw; give up. 2 go back on a promise. Not much cop of little value or use. [french caper seize]