Source : Webster's Revised Unabridged Dictionary (1913)

Puke \Puke\, v. i. [imp. & p. p. {Puked}; p. pr. & vb. n.
   {Puking}.] [Cf. G. spucken to spit, and E. spew.]
   To eject the contests of the stomach; to vomit; to spew.

         The infant Mewling and puking in the nurse's arms.
                                                  --Shak.

Source : WordNet®

puking
     n : the reflex act of ejecting the contents of the stomach
         through the mouth [syn: {vomit}, {vomiting}, {emesis}, {regurgitation},
          {disgorgement}]