water ski

noun, plural water skis or, sometimes, water ski.
1.
a ski on which to water-ski, designed to plane over water: it is shorter and broader than the skis used on snow.
Origin
1930-35

water-ski

[waw-ter-skee, wot-er-] /ˈwɔ tərˌski, ˈwɒt ər-/
verb (used without object), water-skied, water-skiing.
1.
to plane over water on water skis or a water ski by grasping a towing rope pulled by a speedboat.
Related forms
water-skier, noun
Examples from the web for water ski
  • Race course markers including water ski and slalom markers.
  • Two possible applications are water ski jumping and motorcycle stunts.
British Dictionary definitions for water ski

water-ski

noun
1.
a type of ski used for planing or gliding over water
verb -skis, -skiing, -skied, -ski'd
2.
(intransitive) to ride over water on a water-ski or water-skis while holding a rope towed by a speedboat
Derived Forms
water-skier, noun
water-skiing, noun
Word Origin and History for water ski

water-ski

n.

1931, from water (n.1) + ski (n.). As a verb from 1953.