What does "eat" mean?

Additional senses

1. 2.The lean . . . did eat up the first seven fat kine. Gen. xli.
2. 3.The lion had not eaten the carcass. 1 Kings xiii.
3. 4.With stories told of many a feat, How fairy Mab junkets eat. Milton. The island princes overbold Have eat our substance. Tennyson. His wretched estate is eaten up with mortgages. Thackeray.
4. 5.To corrode, as metal, by rust; to consume the flesh, as a cancer; to waste or wear away; to destroy gradually; to cause to disappear. To eat humble pie. See under Humble. -- To eat of (partitive use). "Eat of the bread that can not waste." Keble. -- To eat one's words, to retract what one has said. (See the Citation under Blurt.) -- To eat out, to consume completely. "Eat out the heart and comfort of it." Tillotson. -- To eat the wind out of a vessel (Naut.), to gain slowly to windward of her.
5. 6.To take food; to feed; especially, to take solid, in distinction from liquid, food; to board. He did eat continually at the king's table. 2 Sam. ix.
6. 7.2. To taste or relish; as, it eats like tender beef.
7. 8.To make one's way slowly. To eat, To eat in or into, to make way by corrosion; to gnaw; to consume. "A sword laid by, which eats into itself." Byron. -- To eat to windward (Naut.), to keep the course when closehauled with but little steering; -- said of a vessel.