pro·ven·tric·u·lus 
(prō′vĕn-trĭkyə-ləs)
(prō′vĕn-trĭkyə-ləs)n. pl. pro·ven·tric·u·li (-lī′)
1. The division of the stomach in birds that secretes digestive enzymes and passes food from the crop to the gizzard.
2. A similar digestive chamber in certain insects and worms.
[PRO-2 + Latin ventriculus, stomach, diminutive of venter, belly.]
pro′ven·tricu·lar (-lər) adj.