Oblong tomato type (4)
I believe the answer is:
roma
'oblong 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 "Italian Rome" , "Travelling people" , "Travellers, gypsies" , "Travellers; Italian capital" , "Members of a nomadic people" .)