Source : Webster's Revised Unabridged Dictionary (1913)

Pneumogastric \Pneu`mo*gas"tric\, a. [Pneumo- + gastric.]
   (Anat.)
   Of or pertaining to the lungs and the stomach. -- n. The
   pneumogastric nerve.

   {Pneumogastric nerve} (Anat.), one of the tenth pair of
      cranial nerves which are distributed to the pharynx,
      esophagus, larynx, lungs, heart, stomach, liver, and
      spleen, and, in fishes and many amphibia, to the branchial
      apparatus and also to the sides of the body.

Source : WordNet®

pneumogastric nerve
     n : a mixed nerve that supplies the pharynx and larynx and lungs
         and heart and esophagus and stomach and most of the
         abdominal viscera [syn: {vagus}, {vagus nerve}, {nervus
         vagus}, {pneumogastric}, {tenth cranial nerve}, {wandering
         nerve}]