涅 niè blacken Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: alunite All meanings 2 niè 2 alunite 1dye black 1 1 sentence for 涅 (niè — alunite) 古人常采涅石作为黑色染料。 gǔrén cháng cǎi niè shí zuòwéi hēisè rǎnliào. Ancient people often used alum shale as a black dye. Source: Dong Chinese Dictionary