an uninhabited island group belonging to Mexico, in the Pacific Ocean, SSW of the Baja California peninsula: Socorro is the largest island. 320 sq. mi. (830 sq. km).
Re·vil·la·gi·ge·do Islands also Re·vil·la Gi·ge·do Islands (rĭ-vē'ə-hĭ-hā'dō, rě-vē'yä-hē-hě'-) An island group of Mexico in the Pacific Ocean south of Baja California. The rocky islands are surrounded by good fishing grounds.