Rob suffering with colic, getting greens (8)
I believe the answer is:
broccoli
'greens' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's a link between them I don't understand?
'rob suffering with colic' is the wordplay.
'suffering with' indicates anagramming the letters.
'rob' with its letters mixed up with 'colic' gives 'BROCCOLI'.
'getting' is the link.
Can you help me to learn more?
(Other definitions for broccoli that I've seen before include "Vegetable with tightly packed green or purple flower heads" , "Vegetable in a strange cool crib" , "Calabrese" , "Vegetable of cabbage family" , "A hardy variety of cauliflower" .)