Fruit crate broken in square (9)
I believe the answer is:
nectarine
'fruit' is the definition.
(nectarine is a kind of fruit)
'crate broken in square' is the wordplay.
'broken' is an anagram indicator.
'in' means one lot of letters goes inside another.
'square' becomes 'nine' (I've seen this before**).
'crate' with letters rearranged gives 'ectar'.
'ectar' put within 'nine' is 'NECTARINE'.
(Other definitions for nectarine that I've seen before include "Fruit - aren't nice (anag)" , "Trace nine to a kind of peach" , "Luscious fruit" , "Variety or mutation of a peach" , "Entrance I make with thin-skinned peach" .)