Shift bonus for one of the crew (5)
I believe the answer is:
bosun
'one of the crew' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'shift bonus' is the wordplay.
'shift' is an anagram indicator.
'bonus' is an anagram of 'BOSUN'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for bosun that I've seen before include "Petty officer on a merchant ship" , "A diminutive boatswain" , "A dimunitive boatswain" , "An abbreviated boatswain" , "A short boatswain" .)