Some blouse definitely is handed down? (4)
I believe the answer is:
used
'handed down?' is the definition.
(second-hand)
'some blouse definitely is' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'USED' is hidden in the letters of 'blouse definitely is'.
(Other definitions for used that I've seen before include "Accustomed, having been put into service" , "Accustomed - exploited" , "Second-hand; exploited" , "Scottish expert" , "Second-hand - not wasted" .)