[1] : The Collaborative International Dictionary of English v.0.48

eat \eat\ =et, v. t. imp. ate =at; 277, obsolescent 
   colloq. eat e^t; p. p. eaten =et"'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. aumta, dan. aede, goth. itan,
   ir.  gael. ith, w. ysu, l. edere, gr. 'e`dein, skr. ad.
   root6. 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.
      1913 webster

            they . . . ate the sacrifices of the dead. --ps.
                                                  cvi. 28.
      1913 webster

            the lean . . . did eat up the first seven fat kine.
                                                  --gen. xli.
                                                  20.
      1913 webster

            the lion had not eaten the carcass.   --1 kings
                                                  xiii. 28.
      1913 webster

            with stories told of many a feat,
            how fairy mab the junkets eat.        --milton.
      1913 webster

            the island princes overbold
            have eat our substance.               --tennyson.
      1913 webster

            his wretched estate is eaten up with mortgages.
                                                  --thackeray.
      1913 webster

   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.
      1913 webster

   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.
        1913 webster
see also:
ate eat eaten eating etch fret 
edible to eat humble pie humble to eat of to eat one's words 
blurt to eat out to eat the wind out of a vessel 

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