tarpaulin UK /tɑˈpɔː.lɪn/US /ˈtɑːɹpəlɪn/noun 4verb 1forms 3 noun4 •A heavy, waterproof sheet of material, often cloth or plastic sheet, used as a cover or blanket (often as weatherproofing, or to keep loose cargo from blowing off a lorry).Throw a tarpaulin over that woodpile before it gets wet. •(no longer used) Canvas waterproofed with tar, used as a cover. •(slang, no longer used) A sailor. •(no longer used) A hat made of, or covered with, painted or tarred cloth, worn by sailors and others. verb1 •To cover with a tarpaulin."Cover it up! Don't touch it!" said the Professor. So we tarpaulined it according to his instructions, and there it lies. — 1929 formstarpaulined · tarpaulining · tarpaulins