Special item (10)
I believe the answer is:
particular
I believe this clue is a double definition.
'special' is the first definition.
('particular' can be a synonym of 'special')
'item' is the second definition.
('particular' can be a synonym of 'item')
(Other definitions for particular that I've seen before include "Fussy" , "item" , "Fog over London" , "Special" , "Fastidious; individual" .)