Possibly airs garment (4)
I believe the answer is:
sari
'garment' is the definition.
(I know that sari is a type of garment)
'possibly airs' is the wordplay.
'possibly' indicates an anagram.
'airs' is an anagram of 'SARI'.
(Other definitions for sari that I've seen before include "habit" , "Eastern garment" , "Asian dress" , "Hindu female garment" , "Traditional dress of Hindu women" .)