Propelling implements (4)
I believe the answer is:
oars
'propelling implements' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for oars that I've seen before include "Al --, US gangster" , "Propellers for small boat" , "Busy bodies usually stick them in, also used in rowing" , "Boating implements" , "Rowing blades" .)