Mas·sa·chu·sett also Mas·sa·chu·set (mās'ə-chōō'sĭt, -zĭt) n.
pl.Massachusett or Mas·sa·chu·setts also Massachuset or Mas·sa·chu·sets
A Native American people formerly located along Massachusetts Bay from Plymouth north to Salem. Reduced by epidemics, the Massachusett ceased to exist as a people during the 17th century.
A member of this people.
The Algonquian language of the Massachusett.
[From the Massachusett name of Great Blue Hill south of Boston.]