1. 丝炭：furoin 糠偶姻 | fusain 丝炭 | fuse 导火线
2. 丝煤：furrowing 开沟 | fusain 丝煤 | fused phosphate fertilizer 熔融磷酸肥料
3. 炭画笔：furzy 金雀花的 | fusain 炭画笔 | fuscescent 略带暗褐色的
4. 乌煤：fusafungine 夫沙芬近 | fusain 乌煤 | fusaingroup 丝炭组
noun
1. a stick of black carbon material used for drawing
Synonym: charcoal