proventriculus

Etymology
(19th century), from.

Noun

 * 1)  The part of the avian stomach, between the crop and the gizzard, that secretes digestive enzymes.
 * 2)  A similar part of the digestive system in insects and myriapods.
 * 1)  A similar part of the digestive system in insects and myriapods.

Related terms

 * proventriculitis