Source : Webster's Revised Unabridged Dictionary (1913)

Bitch \Bitch\, n. [OE. biche, bicche, AS. bicce; cf. Icel.
   bikkja, G. betze, peize.]
   1. The female of the canine kind, as of the dog, wolf, and
      fox.

   2. An opprobrious name for a woman, especially a lewd woman.
      --Pope.

Source : WordNet®

bitch
     n 1: an unpleasant difficulty; "this problem is a real bitch"
     2: a woman who is thoroughly disliked; "she said her son
        thought Hilary was a bitch" [syn: {cunt}]
     3: informal terms for objecting; "I have a gripe about the
        service here" [syn: {gripe}, {kick}, {beef}, {squawk}]
     4: female of any member of the dog family
     v : say mean things [syn: {backbite}]