Also found in: Thesaurus, Medical, Idioms, Encyclopedia, Wikipedia.
1. A modified muscular pouch behind the stomach in the digestive tract of birds, having a thick lining and often containing ingested grit that aids in the breakdown of seeds before digestion.
2. A similar digestive organ found in certain invertebrates, such as the earthworm.
1. (Zoology) the thick-walled part of a bird's stomach, in which hard food is broken up by muscular action and contact with grit and small stones
2. (Zoology) a similar structure in many invertebrates
3. informal the stomach and entrails generally
[C14: from Old North French guisier fowl's liver, alteration of Latin gigēria entrails of poultry when cooked, of uncertain origin]
1. Also called ventriculus. the thick-walled, muscular lower stomach of many birds and reptiles that grinds partially digested food, often with the aid of ingested gravel.
2. a similar structure in the foregut of arthropods and annelids, often lined with chitin and small teeth.
3. the innards or viscera collectively, esp. the intestine and stomach.
[1325–75; Middle English giser < Old French giser, gezier < Vulgar Latin *gigerium; compare Latin gigeria, gizeria giblets, probably ultimately < Iranian]
A muscular pouch behind the stomach in birds. It has a thick lining and often contains swallowed sand or grit, which helps to break food into small pieces.