consume

verb

1. eat up completely, as with great appetite"Some people can down a pound of meat in the course of one meal"
2. serve oneself to, or consume regularly"Have another bowl of chicken soup!"
3. spend extravagantly"waste not, want not"
4. destroy completely"The fire consumed the building"
5. use up (resources or materials)"this car consumes a lot of gas"
6. engage fully"The effort to pass the exam consumed all his energy"