Possibly posh emporium (4)

I believe the answer is:
shop
'emporium' is the definition.
(I've seen this in another clue)
'possibly posh' is the wordplay.
'possibly' is an anagram indicator.
'posh' anagrammed gives 'SHOP'.
(Other definitions for shop that I've seen before include "Betray - place selling things" , "Establishment for the sale of goods" , "Store, outlet" , "Where goods are bought and sold" , "Give away" .)