Clothes in luggage (6)
I believe the answer is:
trunks
I believe this clue is a double definition.
'clothes' is the first definition.
(trunks is a kind of clothes)
'luggage' is the second definition.
(I know this)
'in' acts as a link.
(Other definitions for trunks that I've seen before include "Swimming shorts" , "luggage" , "Men's swimsuits on an elephants?" , "Underwear for elephants?" , "Parts of trees and elephants" .)