Stored away (6)
I believe the answer is:
'stored away' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stowed that I've seen before include "Two Eds (anag.)" , "Pack or store out of sight" , "in luggage compartment?" , "Put under the hatches" , "Packed or stored out of sight" .)