sit-ski; monoski; outrigger ski
A type of adaptive alpine skiing equipment that allows a person to sit while skiing. The term is wasei-eigo, derived from English 'chair ski'. In English, 'sit-ski' or 'monoski' are more common terms for this device.
wasei-eigo (Japanese-coined English), from chair ski
He competed in the Paralympics using a sit-ski.
A sit-ski trial session was held at the ski resort.
Wasei-eigo from English 'chair' + 'ski'. The exact origin is uncertain, but it likely emerged in the context of adaptive winter sports.