Bristle burst bubble (7)
I believe the answer is:
blister
'bubble' is the definition.
(thesaurus)
'bristle burst' is the wordplay.
'burst' indicates an anagram.
'bristle' is an anagram of 'BLISTER'.
(Other definitions for blister that I've seen before include "Give hair dryer treatment" , "Bubble-like swelling on skin" , "Bristle (anag.)" , "Thin bubble on the skin" , "Friction mark" .)