Wiktionary
alt. A small motorized water craft with a flattish hull and an upright centre, which a rider sits astride. n. A small motorized water craft with a flattish hull and an upright centre, which a rider sits astride.
Wikipedia
Jet Ski is the brand name of a personal watercraft manufactured by Kawasaki. It was the "first commercially successful" personal watercraft in America, having been released in 1972 (after reaching a license agreement with the inventor of the Jet Ski, Clayton Jacobson II when his license agreement with Bombardier expired). The term is sometimes used generically to refer to any type of personal watercraft.
Usage examples of "jet ski".
The Jet Ski riders came swiftly from behind, the afternoon rays Clinting off their beer cans.
Later, when we were helping William take the Jet Ski out of the water, some very loud people - all wearing black leather jackets with BMW logos - arrived with a gleaming black Range Rover and a big black ski boat.
The silence over the dark waters was fractured by the harsh whirr of a jet ski's motor.
Bigler owned a company that rented Jet Ski-style water bikes to tourists on the island.
Fishing boats with rod racks and flying bridges slid by, speedboats as low and colorful as sun visors, and power yachts with sun lounges and Jet Ski launches, oceangoing palaces of affluence and indolence sculpted in white fiberglass.
He heard a humming sound in the distance but thought it was probably one of the guests bobbing over the water on a Jet Ski.
Thirty seconds later, the wall on the hut at the end of the floating dock facing the lake also flew open as two guards riding Chinese-built personal watercraft, these designed along the lines of the Japanese Kawasaki Jet Ski, sprinted after the AUV.