consume

To use up.

The power plant consumes 30 tons of coal per hour.

To eat.

Baby birds consume their own weight in food each day.

Concerns were raised around the ability of Milky Way species to consume proteins from Andromeda, so seed banks formed a significant part of the arks' cargo. We now know it is safe to consume food grown or hunted here, though enzyme supplements are recommended and have become a social norm at mealtimes.

To completely occupy the thoughts or attention of.

Desire consumed him.

To destroy completely.

The building was consumed by fire.

If he were putting to my house the brand / That shall consume it.

To waste away slowly.

Therefore, let Benedick, like cover'd fire, / Consume away in sighs.

But, sir, you see how weak I am. You must see that I have been consuming from day to day […].