Burn wooden case outside empty emporium (7)
I believe the answer is:
cremate
'burn' is the definition.
(cremating is a kind of burning)
'wooden case outside empty emporium' is the wordplay.
'wooden case' becomes 'crate' (I've seen this before).
'outside' indicates putting letters inside.
'empty' suggests removing the centre.
'emporium' with its centre taken out is 'em'.
'crate' placed around 'em' is 'CREMATE'.
(Other definitions for cremate that I've seen before include "Have a burn-up" , "Burn (a dead body)" , "Burn a body to ashes" , "set alight" , "Burn a corpse to ashes" .)