[giz.zard] n [alter. of ME giser, fr. OF guisier, giser, fr. L gigeria (pl.) giblets] (1565) 1 a: the muscular enlargement of the alimentary canal of birds that has usu. thick muscular walls and a tough horny lining for grinding the food and when the crop is present follows it and the proventriculus b: a thickened part of the alimentary canal in some animals (as an insect or an earthworm) that is similar in function to the crop of a bird
2: innards