Is able to be a bit buccaneering (3)
I believe the answer is:
can
'is able to' is the definition.
(if you can do something you are able to do it)
'a bit buccaneering' is the wordplay.
'a bit' indicates the answer is hidden within the clue (I've seen 'bit of' mean this).
'CAN' can be found hidden inside 'buccaneering'.
'be' is the link.
(Other definitions for can that I've seen before include "Vessel" , "John" , "(Tin) container" , "Cooler" , "let go in the US" .)