'Ventriculus' definitions:

Definition of 'ventriculus'

(from WordNet)
noun
Thick-walled muscular pouch below the crop in many birds and reptiles for grinding food [syn: gizzard, ventriculus, gastric mill]

Definition of 'Ventriculus'

From: GCIDE
  • Ventriculus \Ven*tric"u*lus\, n.; pl. Ventriculi. [L., belly, dim. fr. venter belly.] (Zool.) (a) One of the stomachs of certain insects. (b) The body cavity of a sponge. [1913 Webster]