Source : Webster's Revised Unabridged Dictionary (1913)

Cow \Cow\, v. t. [imp. & p. p. {Cowed} (koud);; p. pr. & vb. n.
   {Cowing}.] [Cf. Icel. kuga, Sw. kufva to check, subdue, Dan.
   kue. Cf. {Cuff}, v. t.]
   To depress with fear; to daunt the spirits or courage of; to
   overawe.

         To vanquish a people already cowed.      --Shak.

         THe French king was cowed.               --J. R. Green.

Cow \Cow\, n. [Prob. from same root as cow, v. t.] (Mining)
   A wedge, or brake, to check the motion of a machine or car; a
   chock. --Knight.

Cow \Cow\ (kou), n. [See {Cowl} a hood.]
   A chimney cap; a cowl

Cow \Cow\, n.; pl. {Cows} (kouz); old pl. {Kine} (k[imac]n).
   [OE. cu, cou, AS. c[=u]; akin to D. koe, G. kuh, OHG. kuo,
   Icel. k[=y]r, Dan. & Sw. ko, L. bos ox, cow, Gr. boy^s, Skr.
   g[=o]. [root]223. Cf. {Beef}, {Bovine}, {Bucolic}, {Butter},
   {Nylghau}.]
   1. The mature female of bovine animals.

   2. The female of certain large mammals, as whales, seals,
      etc.

Source : WordNet®

cow
     n 1: female of domestic cattle: "`moo-cow' is a child's term"
          [syn: {moo-cow}]
     2: mature female of mammals of which the male is called `bull'
     3: a large unpleasant woman

cow
     v : subdue, restrain, or overcome by affecting with a feeling of
         awe; frighten (as with threats) [syn: {overawe}]