白はく銑せんはくせんMeanings1nounwhite pig ironTechnical term in metallurgy for pig iron with a white fracture surface, containing carbon in combined form.白はく銑せんは炭たん素そが化か合ごう状じょう態たいで含ふくまれている銑せん鉄てつの一いっ種しゅです。White pig iron is a type of pig iron in which carbon is present in combined form.