The crossword solution for the term 'Switzerland Canton' is URI, which is a three-letter acronym. URI is the abbreviation for the canton of Uri, which is one of the 26 cantons of Switzerland. Uri is located in the central part of the country and is the second least populated canton in Switzerland. It is bordered by the cantons of Obwalden, Nidwalden, Schwyz, Glarus, and Graubünden. Uri is known for its mountainous landscape and is home to the Gotthard Pass, which is an important trade route between northern and southern Europe.