Eat hungrily and quickly (6)
I believe the answer is:
devour
'eat hungrily and quickly' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for devour that I've seen before include "Consume greedily" , "Wolf" , "Eat (food) hungrily" , "Eat (food) quickly" , "Eat greedily" .)