Criminal in store's looting (7)
I believe the answer is:
pillage
'looting' is the definition.
(I know that pillage is a type of looting)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for pillage that I've seen before include "Violent stealing" , "Rob with violence" , "Loot" , "Plunder, sack" , "Sacking" .)