/mas'euh chooh"sit/ , n. , pl. Massachusetts , ( esp. 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 .
[ 1610-20, Amer.; the Massachusett name of Great Blue Hill south of Boston, lit., at the big hill ]