Tomato type (4)
I believe the answer is:
roma
'tomato type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for roma that I've seen before include "Travellers; Italian capital" , "Travellers, gypsies" , "Italian Rome" , "capital for > gypsy men" , "Members of a nomadic people" .)