From Longman Dictionary of Contemporary Englishski jumpˈski jump noun [countable] DSOa long steep sloping platform which people go down on skis and jump off to see how far they can go through the air in sports competitions —ski jumping noun [uncountable]
Examples from the Corpus
ski jump• Finally, we recommend the excursion to Garmisch-Partenkirchen, to view the Olympic ski jump, and the capital of the Tyrol-Innsbruck. 