Jolly Roger crewman (4)
I believe the answer is:
smee
'jolly roger crewman' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for smee that I've seen before include "Captain Hook's sidekick" , "Literary pirate" , "Captain Hook's right-hand man" , "Local duck" , "Hook's bosun (Barrie)" .)