devour
verb [T]
to eat eagerly and in large amounts so that nothing is left
The young cubs hungrily devoured the deer that the lion had killed.
He's just devoured the most enormous plateful of spaghetti.
FIGURATIVE She's a very keen reader - she just devours (=reads quickly and eagerly) one book after another.
FIGURATIVE The flames quickly devoured (=destroyed) the building.

(figurative) If you are devoured by an emotion, esp. a bad feeling, you feel it very strongly and it strongly influences your behaviour.
He was devoured by jealousy.

devouring
adjective [usually before n]
LITERARY
FIGURATIVE She is driven by a devouring (=extremely strong and sometimes destructive) ambition/hatred/passion. [usually before n]