Rabbits run out of veg (6)
I believe the answer is:
spouts
'rabbits' is the definition.
'run out of veg' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'out of' suggests deleting specific letters.
'veg' becomes 'sprouts'.
'sprouts' with 'r' removed is 'SPOUTS'.
(Other definitions for spouts that I've seen before include "Openings for passage of liquids" , "Declaims; jets" , "Gushes" , "Pontificates - toss-up (anag)" , "Sends out as liquid jets" .)