Layer one's rolled back in storehouse (7)
I believe the answer is:
deposit
'layer' is the definition.
(I've seen this before)
'one's rolled back in storehouse' is the wordplay.
'one's' becomes 'I's' (Roman numeral).
'rolled back' is a reversal indicator.
'in' indicates putting letters inside.
'storehouse' becomes 'depot' (synonyms).
'is' backwards is 'si'.
'si' going within 'depot' is 'DEPOSIT'.
(Other definitions for deposit that I've seen before include "fur, possibly" , "Put down - initial payment" , "Part payment in advance to secure goods" , "Put down or leave something" , "First instalment" .)