1. (noun)Massachusetts, Bay State, Old Colony, MA a state in New England; one of the original 13 colonies Synonyms: mammy, mamma, mommy, momma, milliampere, mama, mom, mum, mummy
2. (noun)Massachuset, Massachusetts a member of the Algonquian people who formerly lived around Massachusetts Bay
3. (noun)Massachusetts, Massachusetts Bay Colony one of the British colonies that formed the United States
4. (noun)Massachuset, Massachusetts the Algonquian language of the Massachuset