Bore about dress (4)
I believe the answer is:
robe
'dress' is the definition.
(robing is a kind of dressing)
'bore about' is the wordplay.
'about' indicates an anagram.
'bore' with letters rearranged gives 'ROBE'.
(Other definitions for robe that I've seen before include "Clerical garment" , "Loose garment for Boer" , "habit" , "Formal attire" , "Loose outer garment" .)