室; 胃
Ventriculus \Ven*tric"u*lus\, n.; pl. {Ventriculi}. [L., belly, dim. fr. venter belly.] (Zo["o]l.) (a) One of the stomachs of certain insects. (b) The body cavity of a sponge.
ventriculus n : thick-walled muscular pouch below the crop in many birds and reptiles for grinding food [syn: {gizzard}, {gastric mill}] [also: {ventriculi} (pl)]