waterskiing

WordReference Random House Learner's Dictionary of American English © 2025

ˈwa•ter ˌski, n. [countable]

1. Sport a short, broad ski on which to glide over water while being towed by a speedboat.

wa•ter--ski, v. [no object] , -skied, -ski•ing. 
wa•ter--ski•er, n. [countable]
wa•ter-ski•ing, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

wa′ter ski′, 

1. Sport a ski on which to water-ski, designed to plane over water: it is shorter and broader than the ski used on snow.

• 1930–35

wa•ter-ski  (wô′tər skē′, wot′ər-), v.i., -skied, -ski•ing. 

1. Sport to plane over water on water skis or a water ski by grasping a towing rope pulled by a speedboat.

wa′ter-ski′er, n.