スキーは英語で
ski

英語の定義

ski
1. 名詞. スキー。
基本的に用具であるスキー板を指す。競技は、skiing。
2. 動詞. スキーで滑る。
3. 動詞. （競技としての）スキーをする。

ski
1. n. One of a pair of long flat runners designed for gliding over snow.
2. n. One of a pair of long flat runners designed for gliding over water while pulled by a boat.
3. n. (aviation) One of a pair of long flat runners under some flying machines, used for landing.
4. v. (intransitive) To move on skis.
5. v. To travel over (a slope etc.) on skis; travel on skis at (a place), especially as a sport.

skiing
1. v. present participle of ski
2. n. (sports) A group of sports utilizing skis as primary equipment.