plural of tin-foil hat

A piece of headgear made from one or more sheets of tin foil, aluminium foil, or other similar material, especially when worn in the belief that it shields the brain from electromagnetic fields, or against mind control and/or mind reading.

plural of tin foil hat

Alternative spelling of tinfoil hat

plural of foilboard

A surfboard with a hydrofoil that extends below the board into the water, causing the board to leave the surface of the water at various speeds.

(intransitive) To surf using a foilboard.

One who foils or frustrates.

plural of foiler

Capable of being foiled.