ski

n. one of a pair of long, narrow pieces of wood, metal, or plastic used for sliding over snow or water.

n. a long, narrow runner of wood, plastic, or metal, often curved upward at the tip, used in pairs for gliding over snow or water.

“He waxed his skis before heading out to the mountain for the day.”

“Modern skis are engineered with complex composite materials to provide both flexibility and edge control on icy slopes.”

n. one of the flat runners under a plane or helicopter used for landing on snow or ice.

n. a runner attached to the landing gear of an aircraft to facilitate take-off and landing on snow-covered surfaces.

“The small plane was fitted with skis so it could land on the frozen lake.”

“The bush pilot inspected the hydraulic lines of the retractable skis before departing for the remote Arctic research station.”

Technical

v. to move over snow or water using skis, usually as a hobby or sport.

v. to travel over a surface, typically snow or water, using skis; functions as both a transitive and intransitive verb.

“We plan to ski in the Alps during our winter holiday.”

“Professional athletes often ski several hours a day to maintain the leg strength required for competitive downhill racing.”