Hide away; store (5)
I believe the answer is:
stash
I believe this clue is a double definition.
'hide away' is the first definition.
(I've seen this in another clue)
'store' is the second definition.
(stash is a kind of store)
(Other definitions for stash that I've seen before include "Secret(ly) store" , "Stow away" , "Consignment of drugs" , "Secret hoard" , "Cache" .)