hydrofoil

American  

[hahy-druh-foil] / ˈhaɪ drəˌfɔɪl /

noun

1. Naval Architecture. a surface form creating a thrust against water in a direction perpendicular to the plane approximated by the surface.

2. Nautical.

   1. a winglike member having this form, designed to lift the hull of a moving vessel.

   2. a vessel equipped with hydrofoils.

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hydrofoil British  

/ ˈhaɪdrəˌfɔɪl /

noun

1. a fast light vessel the hull of which is raised out of the water on one or more pairs of fixed vanes

2. any of these vanes

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Etymology

Origin of hydrofoil

First recorded in 1915–20; hydro- ¹ + foil ²