Store up memoir for play (8)
I believe the answer is:
emporium
'store' is the definition.
(I've seen this before)
'up memoir for play' is the wordplay.
'for play' indicates an anagram (I've seen this in other clues).
'up'+'memoir'='upmemoir'
'upmemoir' anagrammed gives 'EMPORIUM'.
(Other definitions for emporium that I've seen before include "A large imposing shop" , "Large retail store with many departments" , "A large shop or centre of commerce" , "Large and ostentatious retail establishment" , "Make up memoir about a very large shop" .)