Eat (verb)

1. To take into the body through the mouth as food.
2. To destroy, consume, or waste.
3. To make a meal of.
4. To consume by nibbling or biting.
5. To use up or expend.

Origin:

Middle english etan, from old english etan; akin to old high german ezzan to eat.

Examples:

1. She ate a sandwich for lunch.
2. The fire ate up all the wood.
3. They ate at a fancy restaurant.
4. The squirrel ate the nut.
5. He ate into his savings.