Garment reflecting earlier time (4)
I believe the answer is:
toga
'garment' is the definition.
(toga is a kind of garment)
'reflecting earlier time' is the wordplay.
'reflecting' is a reversal indicator.
'earlier' becomes 'ago' (I've seen this before).
'time' becomes 't'.
'ago'+'t'='agot'
'agot' back-to-front is 'TOGA'.
(Other definitions for toga that I've seen before include "Old Roman gown" , "Classical garment" , "draped cloth" , "Ancient Roman garment" , "Roman clothing" .)