hydrofoil /ˈhaɪ.dɹoʊˌfɔɪl/noun 2verb 1forms 3 noun2 •A wing attached to the hull of a ship that raises it out of the water when travelling at speed and thus reduces drag. •A vessel equipped with such a device. verb1 •To operate or use or ride atop a hydrofoil wing on a hull so equipped. formshydrofoiled · hydrofoiling · hydrofoils
