Source : Webster's Revised Unabridged Dictionary (1913)

Cork \Cork\ (k[^o]rk), n. [Cf. G., Dan., & Sw. kork, D. kurk;
   all fr. Sp. corcho, fr. L. cortex, corticis, bark, rind. Cf.
   {Cortex}.]
   1. The outer layer of the bark of the cork tree ({Quercus
      Suber}), of which stoppers for bottles and casks are made.
      See {Cutose}.

   2. A stopper for a bottle or cask, cut out of cork.

   3. A mass of tabular cells formed in any kind of bark, in
      greater or less abundance.

   Note: Cork is sometimes used wrongly for calk, calker;
         calkin, a sharp piece of iron on the shoe of a horse or
         ox.

   {Cork jackets}, a jacket having thin pieces of cork inclosed
      within canvas, and used to aid in swimming.

   {Cork tree} (Bot.), the species of oak ({Quercus Suber} of
      Southern Europe) whose bark furnishes the cork of
      commerce.

Cork \Cork\, v. t. [imp. & p. p. {Corked} (k[^o]rkt); p. pr. &
   vb. n. {Corking}.]
   1. To stop with a cork, as a bottle.

   2. To furnish or fit with cork; to raise on cork.

            Tread on corked stilts a prisoner's pace. --Bp.
                                                  Hall.

   Note: To cork is sometimes used erroneously for to calk, to
         furnish the shoe of a horse or ox with sharp points,
         and also in the meaning of cutting with a calk.

Source : WordNet®

cork
     v 1: close a bottle with a cork [syn: {cork up}] [ant: {uncork}]
     2: stuff with cork; "The baseball player stuffed his bat with
        cork to make it lighter"

cork
     n 1: outer bark of the cork oak; used for stoppers for bottles
          etc.
     2: (botany) outer tissue of bark; a protective layer of dead
        cells [syn: {phellem}]
     3: a port city in southern Ireland
     4: the plug in the mouth of a bottle (especially a wine bottle)
     5: a small float usually made of cork; attached to a fishing
        line [syn: {bob}, {bobber}, {bobfloat}]