Devour (verb)

1. Eat (something) hungrily or quickly.
2. Consume or destroy (something) completely.
3. Pay too much attention to.

Origin:

Middle english: from old french devorer, from latin devorare, from de- "completely" + vorare "swallow". .

Examples:

1. He devoured the sandwich in two bites.
2. The fire devoured the building.
3. The company devoured its competitors.
4. The lion devoured its prey.
5. He devoured every book on the subject.