red-lead red lead • red-leader · · · Info · Definitions · Synonyms · Characters · · red-lead · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (noun) a reddish oxide of lead (Pb3O4) used as a pigment in paints and in glass and ceramics. Synonyms: red lead, minium. · · Noun Definition 1 Synonyms · · · red lead · · Synonym 1 minium · · Synonym 2 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072