柯林斯词典boneblack /ˈbəʊnˌblæk/ 1. N a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment (骨頭分解蒸餾後得到的)骨黑 返回 boneblack