Gets rid of trousers, time to show piles (6)
I believe the answer is:
stacks
'piles' is the definition.
(pile can mean a stack of something)
'gets rid of trousers time' is the wordplay.
'gets rid of' becomes 'sacks' (sack can mean to dismiss or get rid of).
'trousers' is an insertion indicator (to trouser can mean to steal or take).
'time' becomes 't' (abbreviation).
'sacks' placed around 't' is 'STACKS'.
'to show' is the link.
(Other definitions for stacks that I've seen before include "Tons" , "A lot (of hay?)" , "bags?" , "Orderly piles or heaps" , "Orderly heaps as of hay" .)