noun
- a contest in which cross-country skiers, carrying rifles, shoot at targets at four stops along a 12.5-mile (20 km) course.
- an athletic contest comprising any two consecutive events.
noun
- sport a contest in which skiers with rifles shoot at four targets along a 20-kilometre (12.5-mile) cross-country course
1956, from bi- + Greek athlon “contest,” abstracted from pentathlon.