noun
the line on a map that is 49° north of the equator , thought of as forming the border between western Canada and the US
noun
the line on a map that is 49° north of the equator , thought of as forming the border between western Canada and the US
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005