1. a boat equipped with wing-like structures that lift the hull above the water at high speeds
2. a wing-like structure attached to the hull of a boat that provides lift when moving through water
Usage: nautical

Examples

• The hydrofoil glided smoothly across the harbor at incredible speed.
• Passengers enjoyed a comfortable ride on the hydrofoil ferry.
• The boat’s hydrofoils lifted it completely out of the water.
• Engineers designed new hydrofoils to improve the vessel’s efficiency.
• The hydrofoil service connects the mainland to the island in just thirty minutes.
• Modern hydrofoils can reach speeds of over 50 knots.
• The captain adjusted the hydrofoil’s angle for optimal performance.