Working in a centre for fruit (9)
I believe the answer is:
nectarine
'for fruit' is the definition.
(nectarine is a kind of fruit)
'working in a centre' is the wordplay.
'working' is an anagram indicator.
'in'+'a'+'centre'='inacentre'
'inacentre' with letters rearranged gives 'NECTARINE'.
(Other definitions for nectarine that I've seen before include "Smooth-skinned variety of peach" , "creating a sort of jam" , "fruity" , "Kind of peach with thin skin and no down" , "Fruit - aren't nice (anag)" .)