Verb:
1: eat take in solid food; "She was eating a banana"; "What did you eat for dinner last night?"
2: eat eat a meal; take a meal; "We did not eat until 10 P.M. because there were so many phone calls"; "I didn't eat yet, so I gladly accept your invitation"
3: eat, feed take in food; used of animals only; "This dog doesn't eat certain kinds of meat"; "What do whales eat?"
4: eat up, use up, consume, eat, wipe out, deplete, run through, exhaust use up (resources or materials); "this car consumes a lot of gas"; "We exhausted our savings"; "They run through 20 bottles of wine a week"
5: eat, eat on worry or cause anxiety in a persistent way; "What's eating you?"
6: corrode, eat, rust cause to deteriorate due to the action of water, air, or an acid; "The acid corroded the metal"; "The steady dripping of water rusted the metal stopper in the sink"