1. [v]  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"
2. [v]  use up, as of resources or materials; "this car consumes a lot of gas"; "We exhausted our savings"; "They run through 20 bottles of wine a week"
3. [v]  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"
4. [v]  take in solid food; "She was eating a banana"; "What did you eat for dinner last night?"
5. [v]  take in food; used of animals only; "This dog doesn't eat certain kinds of meat"; "What do whales eat?"
6. [v]  worry or cause anxiety in a persistent way; "What's eating you?"

Eat
A group of babies enjoys some favorite foods--along with making as big as mess on their faces as possible while they eat.

more details ...

1. \Eat\ ([=e]t), v. t. [imp. {Ate} ([=a]t; 277), Obsolescent &
   Colloq. {Eat} ([e^]t); p. p. {Eaten} ([=e]t"'n), Obs. or
   Colloq. {Eat} ([e^]t); p. pr. & vb. n. {Eating}.] [OE. eten,
   AS. etan; akin to OS. etan, OFries. eta, D. eten, OHG. ezzan,
   G. essen, Icel. eta, Sw. ["a]ta, Dan. [ae]de, Goth. itan, Ir.
   & Gael. ith, W. ysu, L. edere, Gr. 'e`dein, Skr. ad. [root]6.
   Cf. {Etch}, {Fret} to rub, {Edible}.]
   1. To chew and swallow as food; to devour; -- said especially
      of food not liquid; as, to eat bread. ``To eat grass as
      oxen.'' --Dan. iv. 25.
            They . . . ate the sacrifices of the dead. --Ps.
                                                  cvi. 28.
            The lean . . . did eat up the first seven fat kine.
                                                  --Gen. xli.
                                                  20.
            The lion had not eaten the carcass.   --1 Kings
                                                  xiii. 28.
            With stories told of many a feat, How fairy Mab the
            junkets eat.                          --Milton.
            The island princes overbold Have eat our substance.
                                                  --Tennyson.
            His wretched estate is eaten up with mortgages.
                                                  --Thackeray.
   2. 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.
   Syn: To consume; devour; gnaw; corrode.
   

2. \Eat\, v. i.
   1. 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. 13.
   2. To taste or relish; as, it eats like tender beef.
   3. 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.