The Collaborative International Dictionary of English v.0.48:

Stomachous \Stom"ach*ous\, a. [L. stomachosus angry, peexish.
   See Stomach.]
   Stout; sullen; obstinate. [Obs.]
   [1913 Webster]

         With stern looks and stomachous disdain. --Spenser.
   [1913 Webster]