Answer:

cop

Answer	Crossword Clue
COP	Filch
COP	.. a plea
COP	Flatfoot

COP	Friday, e.g.
COP	Man on the beat
COP	Beat figure?
COP	Beat traveler
COP	Worker who's often at his station?
COP	Worker at a station
COP	Serpico, for one
COP	One on a force

COP	One with a beat
COP	Snatch
COP	Traffic ..
COP	Beat-nik?
COP	Renege, with "out"
COP	Back (out), informally
COP	Friday, for one
COP	Robber chaser

COP	Swipe
COP	Robber's foe
COP	Friday, notably
COP	Radar gun aimer
COP	Back (out)
COP	One on a beat
COP	One whose tickets are often expensive
COP	Beatnik?

COP	Glom
COP	Blue wearer, usually
COP	Steal
COP	Badge bearer
COP	Beat walker
COP	The Man
COP	Policeman
COP	Speeder stopper

COP	"Murder One" extra
COP	Radar gun pointer
COP	Black-and-white driver
COP	Eddie Murphy's Axel Foley, for one
COP	Persona for one of the Village People