释义 |
red lead noun 1. : an orange-red to brick-red lead oxide Pb3O4 that is prepared by heating lead monoxide in the presence of air, that when produced commercially may contain litharge and other impurities, and that is used chiefly in storage-battery plates, in glass and ceramics, and as a paint pigment (as for protecting metals from corrosion) — called also minium 2. : fiery red 3. slang : catsup |