Definition of "minster"

[F]urther south in Kent, there was St. Mildred, whose mother, in 670, founded the minster that still stands there in good nick, with nine nuns who are an ever-present help in trouble to all religions and none.

2014 July 20, Jane Gardam, “Give us a bishop in high heels ”, in The New York Times‎, archived from the original on 21 July 2014