Garment worn when sweltering in outskirts of Delhi? (5)
I believe the answer is:
dhoti
'garment worn' is the definition.
(type of garment worn in India)
'sweltering in outskirts of delhi?' is the wordplay.
'sweltering' becomes 'hot' (similar in meaning).
'in' means one lot of letters goes inside another.
'outskirts of' means to remove the middle letters.
'delhi' with its middle removed is 'di'.
'hot' placed into 'di' is 'DHOTI'.
'when' acts as a link.
(Other definitions for dhoti that I've seen before include "Lean over; end of loaf" , "garment in India" , "Hindu loincloth" , "Loin cloth" , "article of clothing" .)