Tarpaulin

n.	1.	A piece of canvas covered with tar or a waterproof composition, used for covering the hatches of a ship, hammocks, boats, etc.
	2.	A hat made of, or covered with, painted or tarred cloth, worn by sailors and others.
	3.	Hence, a sailor; a seaman; a tar. To a landsman, these tarpaulins, as they were called, seemed a strange and half-savage race. - Macaulay.

Noun

1.

tarpaulin - waterproofed canvas Synonyms: tarp

canvas, canvass, tarp