Vegetable people put under grill (7)
I believe the answer is:
pumpkin
'vegetable' is the definition.
(I know that pumpkin is a type of vegetable)
'people put under grill' is the wordplay.
'people' becomes 'kin' (I've seen this in other clues).
'put under' means one lot of letters go next to another.
'grill' becomes 'pump' (I've seen this in other clues).
'kin' after 'pump' is 'PUMPKIN'.
(Other definitions for pumpkin that I've seen before include "Large orange fruit of the squash family" , "Large fruit with many seeds" , "Large type of gourd" , "Big squash" , "Hallowe'en fruit" .)