鞣to tan, to soften; suede; chamois; tannin; to tanStrokes18PinyinróuParts革leather, animal hide柔soft, suppleWords with 鞣鞣制róu zhì · rouzhito tan (leather); tanning鞣质róu zhì · rouzhitannin鞣酸róu suān · rousuantannic acid; tanninStudy it in Yanamino