Definition of Saint John
1 river 418 miles (673 kilometers) long in the northeastern U.S. and southeastern Canada flowing from northern Maine into the Bay of Fundy in New Brunswick
2 city and port at the mouth of the Saint John River in southern New Brunwwick, Canada population 70,063
Seen and Heard
What made you want to look up Saint John? Please tell us where you read or heard it (including the quote, if possible).