Type of paint Barnstaple man energetically carries around (6)
I believe the answer is:
enamel
'type of paint' is the definition.
(I've seen this before)
'barnstaple man energetically carries around' is the wordplay.
'carries' indicates the answer is hidden within the clue.
'around' is a reversal indicator.
'lemane' is hidden within 'barnstaple man energetically'.
'lemane' back-to-front is 'ENAMEL'.
(Other definitions for enamel that I've seen before include "Hard substance covering teeth" , "Dental material" , "Glassy substance" , "Ale men (anag.)" , "hard stuff" .)