noun
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
彼はチェアスキーを使ってパラリンピックに出場した。
He competed in the Paralympics using a sit-ski.
チェアスキーの体験会がスキー場で開かれた。
A sit-ski trial session was held at the ski resort.