borborygm

from The Collaborative International Dictionary of English v.0.48

Borborygm \Bor"bo*rygm\, n. [F. borborygme, fr. Gr. ?, fr. ? to
   rumble in the bowels.] (Med.)
   A rumbling or gurgling noise produced by wind in the bowels.
   --Dunglison.
   [1913 Webster]