(sports, athletics) An elimination round between competitors who are tied; especially one that takes a different form than previous steps of the competition.
1910,
1922,
1938,
1948 , , The Rheingold Maidens, It's logical that 2,000 models every year fight, scratch and claw their way up to the try-off elimination when it comes time to choose the new Miss Rheingold.
1975, United States. Congress. Senate. Committee on Armed Services
(foundry work, metallurgy) A test for clearance, bearings, and metal thickness of a mold.