smut
noun uk/smʌt/ us/smʌt/
(SEXUAL MATERIAL)
[ U ] disapproving（杂志、图书、图片、电影等）淫秽作品，淫秽话语
magazines, books, pictures, filmsor jokes that offend some people because they relate to sex
There's an awful lot of smut on television these days. 如今的电视里充斥了大量淫秽画面。
(DIRT)
[ C or U ]污迹，污垢
dirt or ash (= powder left when something has burned) that makes a mark on something