LEUK, a village of Switzerland, canton of Valais, on the right bank of the Rhône, 15 miles E.N.E. of Sion. Seven miles N. of this village, at the head of the Dala torrent, and 4500 feet above sea level, are the Baths of Leuk, much resorted to by invalids. They are supplied with water from some hot springs which issue from the earth here at a temperature of about 124° Fahrenheit. The waters are slightly saline, and owe their value more to the mode of using them than to any intrinsic property of their own. Pop. of village, 620.