Pirate's pal (5)
I believe the answer is:
matey
'pirate's pal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for matey that I've seen before include "Friendly, sociable" , "china" , "Pirate's chum (colloq.)" , "Close chum (slang)" , "Sunshine" .)