Noun bay state has 1 sense
  1. Massachusetts, Bay State, Old Colony, MA - a state in New England; one of the original 13 colonies
    --1 is a kind of American state
    --1 is a part of New England
    --1 has parts:
     Boston, Hub of the Universe, Bean Town, Beantown, capital of Massachusetts; Cambridge; Concord; Gloucester; Lexington; Medford; Worcester; Cape Ann; Cape Cod; Cape Cod Canal; Plymouth; Salem; Williamstown; Berkshires, Berkshire Hills; Charles, Charles River; Housatonic, Housatonic River; Merrimack, Merrimack River
    --1 has particulars: Pittsfield; Springfield
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