Source : Webster's Revised Unabridged Dictionary (1913)

Carnal \Car"nal\, a. [L. carnalis, fr. caro, carnis, flesh; akin
   to Gr. ?, Skr. kravya; cf. F. charnel, Of. also carnel. Cf.
   {Charnel}.]
   1. Of or pertaining to the body or its appetites; animal;
      fleshly; sensual; given to sensual indulgence; lustful;
      human or worldly as opposed to spiritual.

            For ye are yet carnal.                --1 Cor. iii.
                                                  3.

            Not sunk in carnal pleasure.          --Milton

            Carnal desires after miracles.        --Trench.

   2. Flesh-devouring; cruel; ravenous; bloody. [Obs.]

            This carnal cur Preys on the issue of his mother's
            body.                                 --Shak.

   {Carnal knowledge}, sexual intercourse; -- used especially of
      an unlawful act on the part of the man.

Source : WordNet®

carnal knowledge
     n : the act of sexual procreation between a man and a woman; the
         man's penis is inserted into the woman's vagina and
         excited until orgasm and ejaculation occur [syn: {sexual
         intercourse}, {intercourse}, {sex act}, {copulation}, {coitus},
          {coition}, {sexual congress}, {congress}, {sexual
         relation}, {relation}]