Source : Webster's Revised Unabridged Dictionary (1913)

Gulp \Gulp\, v. t. [imp. & p. p. {Gulped}; p. pr. & vb. n.
   {Gulping}.] [D. gulpen, cf. OD. golpe gulf.]
   To swallow eagerly, or in large draughts; to swallow up; to
   take down at one swallow.

         He does not swallow, but he gulps it down. --Cowper.

         The old man . . . glibly gulped down the whole
         narrative.                               --Fielding.

   {To gulp up}, to throw up from the stomach; to disgorge.