Other forms: Canadians; Canadianly
If you're a citizen of the northernmost country in North America, you're Canadian. Typically Canadian things include Mounties, maple syrup, and hockey.
A person from Canada is a Canadian, and things that are associated with the country are also Canadian. Drive far enough north in any contiguous U.S. state, and you'll eventually cross the Canadian border. Once you're there, you may see a Canadian moose, use Canadian dollar bills, and eat Canadian poutine (French fries with cheese curds and gravy). The root of Canada and Canadian is thought to be a word meaning "village" in a now-extinct Iroquoian language.