Secret store with ice crushed (8)
I believe the answer is:
esoteric
'secret' is the definition.
(similar in meaning)
'store with ice crushed' is the wordplay.
'with' means one lot of letters go next to another.
'crushed' is an anagram indicator.
'store'+'ice'='storeice'
'storeice' is an anagram of 'ESOTERIC'.
(Other definitions for esoteric that I've seen before include "'Abstruse, arcane (8)'" , "Privileged or confidential among coteries" , "Secret - restricted to initiates" , "Aimed at a few" , "Hard to understand" .)