Bloomers are old-fashioned wear (6)
I believe the answer is:
stocks
'bloomers' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for stocks that I've seen before include "Fragrant flowers; shares" , "Stores - an old form of punishment" , "Supplies of goods in store" , "Securities, investments" , "Old public punishment device" .)