Skiing Definitions: Backcountry, Touring, Frontcountry, Slackcountry, Sidecountry, Piste by Lou Dawson August 3, 2015 by Lou Dawson August 3, 2015 Definitions and Glossary for ski touring terms Backcountry, Frontcountry, Slackcountry, Sidecountry, Piste and more, with comments and examples.