防水油布，防雨布（用于制作防水衣）a type of cotton cloth that has had oil put on it in a special process so that water cannot pass through it, used for making waterproof clothing
2.
[c]
防水外衣a coat or jacket made of oilskin
3.
[pl]
（尤指水手穿的）防水服装a set of clothes made of oilskin , worn especially by sailors