Band member with permit (6)
I believe the answer is:
armlet
'band' is the definition.
(I know that armlet is a type of band)
'member with permit' is the wordplay.
'member' becomes 'arm' (member can mean a limb).
'with' is a charade indicator (letters next to each other).
'permit' becomes 'let' (synonyms).
'arm'+'let'='ARMLET'
(Other definitions for armlet that I've seen before include "Martel (anag.)" , "Band for wearing" , "Type of bracelet" , "Small band" , "Band round sleeve" .)