Massachusett

[mas-uh-choo-sit] /ˌmæs əˈtʃu sɪt/
noun, plural Massachusetts (especially collectively) Massachusett for 1.
1.
a member of an extinct tribe of North American Indians of eastern Massachusetts.
2.
the extinct Algonquian language of the Massachusett and Wampanoag Indians.
Also, Massachuset, Massachusetts.
Origin
1610-20, Americanism; the Massachusett name of Great Blue Hill south of Boston, literally, at the big hill