Drink (or eat) (3)
I believe the answer is:
sup
I believe this clue is a double definition.
'drink' is the first definition.
(to sup is to drink)
'eat' is the second definition.
(supping is a kind of eating)
(Other definitions for sup that I've seen before include "Take food" , "Drink -- eat (with the devil?)" , "Eat a late meal; sip" , "A mouthful of liquid" , "Drink; take a late meal" .)