MontagnaisPronunciation: /ˌmɒntanˈjeɪ/Definition of Montagnais noun (plural same) 1a member of an American Indian people living in a vast area of Canada from north of the Gulf of St Lawrence to the southern shores of Hudson Bay. 2 [mass noun] the Algonquian language of the Montagnais, closely related to Cree. It has about 7,000 speakers. adjective relating to the Montagnais or their language. Origin:from French, literally 'of the mountains'Montagnais in other Oxford dictionaries Definition of Montagnais in the US English dictionary