(whaling) A floating object attached to the end of a harpoon line to slow a whale down and prevent it from diving.
A type of bag pulled behind a boat to stop it from broaching to.
A conical parachute used as a brake for some kinds of aircraft, or as a means of extracting and deploying a larger parachute.
A conical basket or device used variously as a target for gunnery practice, and as a docking point for aerial refuelling.
A wind cone.