石脑油 Traditional form: 石腦油 Pinyin (reading): shínǎoyóu Definitions: naphtha Characters: 石 - stone, rock, mineral 脑 - brain 油 - oil, fat, grease, lard; oil paints Traditional characters: 石 - stone, rock, mineral 腦 - brain 油 - oil, fat, grease, lard; oil paints