tarpaulin

Material, such as waterproofed canvas, used to cover and protect things from moisture.

A sheet of this material.

Canvas made water-proof with tar; hence, any waterproof cloth, especially when used in large sheets for covering anything exposed to the weather or to wet.

A sailor’s hat made of or covered with painted or tarred cloth.

A sailor.

A piece of canvas covered with tar or a waterproof composition, used for covering the hatches of a ship, hammocks, boats, etc.

A hat made of, or covered with, painted or tarred cloth, worn by sailors and others.

Hence, a sailor; a seaman; a tar.

A heavy, waterproof sheet of material, often cloth, used as a cover.

A sailor. Often abbreviated to just tar.