Indian loincloth some remained hot in (5)
I believe the answer is:
dhoti
'indian loincloth' is the definition.
(I've seen this in another clue)
'some remained hot in' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'DHOTI' can be found hidden inside 'remained hot in'.
(Other definitions for dhoti that I've seen before include "Loincloth worn by Indians" , "pants in Goa?" , "Loin cloth" , "Hindu loincloth" , "Simple Indian garment" .)