Source : Webster's Revised Unabridged Dictionary (1913)

Ventricose \Ven"tri*cose`\, Ventricous \Ven"tri*cous\, a. [NL.
   ventricosus, fr. L. venter belly.] (Nat. Hist.)
   Swelling out on one side or unequally; bellied; ventricular;
   as, a ventricose corolla.

   {Ventricose shell}. (Zo["o]l.)
   (a) A spiral shell having the body whorls rounded or swollen
       in the middle.
   (b) A bivalve shell in which the valves are strongly convex.

Source : WordNet®

ventricose
     adj : having a swelling on one side; "the ventricose gullet of an
           insect" [syn: {ventricous}]