Source : Webster's Revised Unabridged Dictionary (1913)

Gastromancy \Gas`tro*man"cy\, n. [Gastro- + -mancy: cf. F.
   gastromancy.] (Antiq.)
   (a) A kind of divination, by means of words seemingly uttered
       from the stomach.
   (b) A species of divination, by means of glasses or other
       round, transparent vessels, in the center of which
       figures are supposed to appear by magic art.