Type of mandarin orange (7)
I believe the answer is:
satsuma
'type of mandarin orange' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for satsuma that I've seen before include "Small, easily-peeled orange" , "Orange - type of pottery" , "Type of small orange" , "Loose-skinned fruit" , "Kind of tangerine" .)