oilskin /ˈɔɪl.skɪn/ noun3 •Cloth made from cotton and treated with oil and pigment to make it waterproof. •A raincoat made from cotton fabric treated with oil and pigment to make it waterproof.I noticed Larry to-day had on two vests, two coats, and an overcoat with his oilskin outside of that. — 1914 •Foul-weather gear worn by sailors, whether of natural or synthetic materials. formsoilskins
