Meaning of son of a bitch

son' of a bitch'

Pronunciation: [key]
— pl. sons of bitches.
  1. a contemptible or thoroughly disagreeable person; scoundrel.
  2. a disagreeable matter; a chore.
  3. (used as an exclamation of impatience, irritation, astonishment, etc.)
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.