gresus Save DMLBS Du Cange gresus v. grisus GRESUS, a Gallico Gris, Cinereus, leucophæus. Gresus panis, Panis ater, Gall. Pain bis, in Inquisitione MS. pro canonizatione S. Yvonis. Vide Griseum, et Panis Gresus.