Garment cut in pieces (5)
I believe the answer is:
tunic
'garment' is the definition.
(historical type of garment)
'cut in pieces' is the wordplay.
'pieces' indicates anagramming the letters (the same pieces in a new order).
'cut'+'in'='cutin'
'cutin' with letters rearranged gives 'TUNIC'.
(Other definitions for tunic that I've seen before include "Close-fitting jacket that's part of a uniform" , "Military uniform" , "Jacket of some soldiers" , "piece of clothing" , "Close fitting jacket as part of uniform" .)