Feature of trousers about to go in luggage? (6)
I believe the answer is:
crease
'feature of trousers' is the definition.
(I've seen this before)
'about to go in luggage?' is the wordplay.
'about to go' becomes 're' (I've seen this in other clues).
'in' indicates putting letters inside.
'luggage?' becomes 'case' (eg a suitcase).
're' placed inside 'case' is 'CREASE'.
(Other definitions for crease that I've seen before include "Furrow; cricket line" , "Fold in clothes" , "Fold in clothing" , "Furrow, wrinkle" , "Dagger rarely" .)