ven·tri·cose /-ˌkos/
  Ven·tri·cose Ven·tri·cous a.  Nat. Hist. Swelling out on one side or unequally; bellied; ventricular; as, a ventricose corolla.
  Ventricose shell. Zool. (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.
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  ventricose
       adj : having a swelling on one side; "the ventricose gullet of an
             insect" [syn: ventricous]