Gulf of America noun2 •(US) Synonym of Gulf of Mexico: A gulf, a marginal sea of the Atlantic, off North America, north of the Caribbean Sea, confined by Mexico, Cuba, United States.For all official purposes within the State of Mississippi, the body of water that is located directly south of Hancock, Harrison and Jackson Counties shall be known as the "Gulf of America." — 2012 •(no longer used) Synonym of Nakhodka Bay: A bay of Nakhodka, Primorsky Krai, Russia.
