The name “Garonne” comes from the Latin Garumna, a transliteration of the river’s ancient name. This native name derives from the Aquitanian (a language related to old Basque) word kar, meaning “rock,” and from a Celtic (or older) suffix -onna which means “source, river,” and which is hidden in the names of many rivers of western Europe (such as France’s Seine, Saône and Dordogne Rivers).