Simple garment (9)
I believe the answer is:
loincloth
'simple garment' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for loincloth that I've seen before include "Garment Indian may have" , "this is placed round middle of groin?" , "Minimal garment" , "Minimum clothing?" , "scanty garment" .)