The Collaborative International Dictionary of English v.0.48:

Peacock \Pea"cock`\ (p[=e]"k[o^]k`), n. [OE. pecok. Pea- in this
   word is from AS. pe['a], p[=a]wa, peacock, fr. L. pavo, prob.
   of Oriental origin; cf. Gr. taw`s, taw^s, Per. t[=a]us,
   t[=a]wus, Ar. t[=a]w[=u]s. See Cock the bird.]
   1. (Zool.) The male of any pheasant of the genus Pavo, of
      which at least two species are known, native of Southern
      Asia and the East Indies.
      [1913 Webster]

   Note: The upper tail coverts, which are long and capable of
         erection, are each marked with a black spot bordered by
         concentric bands of brilliant blue, green, and golden
         colors. The common domesticated species is Pavo
         cristatus. The Javan peacock (Pavo muticus) is more
         brilliantly colored than the common species.
         [1913 Webster]

   2. In common usage, the species in general or collectively; a
      peafowl.
      [1913 Webster]

   Peacock butterfly (Zool.), a handsome European butterfly
      (Hamadryas Io) having ocelli like those of peacock.

   Peacock fish (Zool.), the European blue-striped wrasse
      (Labrus variegatus); -- so called on account of its
      brilliant colors. Called also cook wrasse and cook.

   Peacock pheasant (Zool.), any one of several species of
      handsome Asiatic pheasants of the genus Polyplectron.
      They resemble the peacock in color.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cook \Cook\ (k[=oo]k), v. i. [Of imitative origin.]
   To make the noise of the cuckoo. [Obs. or R.]
   [1913 Webster]

         Constant cuckoos cook on every side.     --The
                                                  Silkworms
                                                  (1599).
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cook \Cook\ (k[oo^]k), v. t. [Etymol. unknown.]
   To throw. [Prov.Eng.] "Cook me that ball." --Grose.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cook \Cook\ (k[oo^]k), n. [AS. c[=o]c, fr. L. cocus, coquus,
   coquus, fr. coquere to cook; akin to Gr. pe`ptein, Skr. pac,
   and to E. apricot, biscuit, concoct, dyspepsia, precocious.
   Cf. Pumpkin.]
   1. One whose occupation is to prepare food for the table; one
      who dresses or cooks meat or vegetables for eating.
      [1913 Webster]

   2. (Zool.) A fish, the European striped wrasse.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cook \Cook\, v. t. [imp. & p. p. Cooked (k[oo^]kt); p. pr &
   vb. n. Cooking.]
   1. To prepare, as food, by boiling, roasting, baking,
      broiling, etc.; to make suitable for eating, by the agency
      of fire or heat.
      [1913 Webster]

   2. To concoct or prepare; hence, to tamper with or alter; to
      garble; -- often with up; as, to cook up a story; to cook
      an account. [Colloq.]
      [1913 Webster]

            They all of them receive the same advices from
            abroad, and very often in the same words; but their
            way of cooking it is so different.    --Addison.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cook \Cook\ (k[oo^]k), v. i.
   To prepare food for the table.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cook
    n 1: someone who cooks food
    2: English navigator who claimed the east coast of Australia for
       Britain and discovered several Pacific islands (1728-1779)
       [syn: Cook, James Cook, Captain Cook, Captain James
       Cook]
    v 1: prepare a hot meal; "My husband doesn't cook"
    2: prepare for eating by applying heat; "Cook me dinner,
       please"; "can you make me an omelette?"; "fix breakfast for
       the guests, please" [syn: cook, fix, ready, make,
       prepare]
    3: transform and make suitable for consumption by heating;
       "These potatoes have to cook for 20 minutes"
    4: tamper, with the purpose of deception; "Fudge the figures";
       "cook the books"; "falsify the data" [syn: fudge,
       manipulate, fake, falsify, cook, wangle,
       misrepresent]
    5: transform by heating; "The apothecary cooked the medicinal
       mixture in a big iron kettle"