Translation

がつがつ食べる / むさぼり食う / あっという間に平らげる

Meaning

To eat something hungrily or quickly, or to consume something entirely with great intensity.

Examples

• The starving dog devoured the bowl of food as soon as it was placed on the floor.
  The starving dog devoured the bowl of food as soon as it was placed on the floor.
• She devoured the latest mystery novel in a single sitting, unable to put it down.
  She devoured the latest mystery novel in a single sitting, unable to put it down.