Source : Webster's Revised Unabridged Dictionary (1913)

Cotton \Cot"ton\ (k[o^]t"t'n), n. [F. coton, Sp. algodon the
   cotton plant and its wool, coton printed cotton, cloth, fr.
   Ar. qutun, alqutun, cotton wool. Cf. {Acton}, {Hacqueton}.]
   1. A soft, downy substance, resembling fine wool, consisting
      of the unicellular twisted hairs which grow on the seeds
      of the cotton plant. Long-staple cotton has a fiber
      sometimes almost two inches long; short-staple, from two
      thirds of an inch to an inch and a half.

   2. The cotton plant. See {Cotten plant}, below.

   3. Cloth made of cotton.

   Note: Cotton is used as an adjective before many nouns in a
         sense which commonly needs no explanation; as, cotton
         bagging; cotton cloth; cotton goods; cotton industry;
         cotton mill; cotton spinning; cotton tick.

   {Cotton cambric}. See {Cambric}, n., 2.

   {Cotton flannel}, the manufactures' name for a heavy cotton
      fabric, twilled, and with a long plush nap. In England it
      is called swan's-down cotton, or Canton flannel.

   {Cotton gin}, a machine to separate the seeds from cotton,
      invented by Eli Whitney.

   {Cotton grass} (Bot.), a genus of plants ({Eriphorum}) of the
      Sedge family, having delicate capillary bristles
      surrounding the fruit (seedlike achenia), which elongate
      at maturity and resemble tufts of cotton.

   {Cotton mouse} (Zool.), a field mouse ({Hesperomys
      gossypinus}), injurious to cotton crops.

   {Cotton plant} (Bot.), a plant of the genus {Gossypium}, of
      several species, all growing in warm climates, and bearing
      the cotton of commerce. The common species, originally
      Asiatic, is {G. herbaceum}.

   {Cotton press}, a building and machinery in which cotton
      bales are compressed into smaller bulk for shipment; a
      press for baling cotton.

   {Cotton rose} (Bot.), a genus of composite herbs ({Filago}),
      covered with a white substance resembling cotton.

   {Cotton scale} (Zo["o]l.), a species of bark louse
      ({Pulvinaria innumerabilis}), which does great damage to
      the cotton plant.

   {Cotton shrub}. Same as Cotton plant.

   {Cotton stainer} (Zo["o]l.), a species of hemipterous insect
      ({Dysdercus suturellus}), which seriously damages growing
      cotton by staining it; -- called also {redbug}.

   {Cotton thistle} (Bot.), the Scotch thistle. See under
      {Thistle}.

   {Cotton velvet}, velvet in which the warp and woof are both
      of cotton, and the pile is of silk; also, velvet made
      wholly of cotton.

   {Cotton waste}, the refuse of cotton mills.

   {Cotton wool}, cotton in its raw or woolly state.

   {Cotton worm} (Zool.), a lepidopterous insect ({Aletia
      argillacea}), which in the larval state does great damage
      to the cotton plant by eating the leaves. It also feeds on
      corn, etc., and hence is often called {corn worm}, and
      {Southern army worm}.

Cotton \Cot"ton\, v. i.
   1. To rise with a regular nap, as cloth does. [Obs.]

            It cottons well; it can not choose but bear A pretty
            nap.                                  --Family of
                                                  Love.

   2. To go on prosperously; to succeed. [Obs.]

            New, Hephestion, does not this matter cotton as I
            would?                                --Lyly.

   3. To unite; to agree; to make friends; -- usually followed
      by with. [Colloq.]

            A quarrel will end in one of you being turned off,
            in which case it will not be easy to cotton with
            another.                              --Swift.

            Didst see, Frank, how the old goldsmith cottoned in
            with his beggarly companion?          --Sir W.
                                                  Scott.

   4. To take a liking to; to stick to one as cotton; -- used
      with to. [Slang]

Source : WordNet®

cotton
     n 1: silky fibers from cotton plants in their raw state [syn: {cotton
          wool}]
     2: fabric woven from cotton fibers [syn: {cotton cloth}]
     3: erect bushy mallow plant or small tree bearing bolls
        containing seeds with many long hairy fibers [syn: {cotton
        plant}]
     4: thread made of cotton fibers

cotton
     v : take a liking to; "cotton to something"