Fish spear (3)
I believe the answer is:
gig
'fish spear' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gig that I've seen before include "A one-night entertainment" , "Perform live < in boat" , "A booking for musicians" , "A one-night musical performance" , "Horse carriage - performer's single booking" .)