Of, relating to, or designating a North American Indian people inhabiting the eastern end of Long Island, New York or their Algonquian language. Also: of or relating to any of various other peoples inhabiting this area and subjugated by the Montauk.
1A member of the Montauk people or of one of the tribes subjugated by them.
2historical The Eastern Algonquian language of the Montauk, closely related to Mohegan (of which it is sometimes classified as a dialect).
Mid 17th century; earliest use found in Confirmation by Indians of Sale of Hempstead in 1643. From an Algonquian place name first attested in English context as Meuntacut, Mountacutt and in Dutch as Mirrachtauhacky, apparently adaptations in Pidgin Delaware of the Munsee form of the name.