<p><strong>Noun</strong></p><ul><li>A native or inhabitant of Moscow.</li><li>A native or inhabitant of the Grand Duchy of Muscovy.</li><li>Also called white mica.</li><li>(Lowercase) Mineralogy: common light-colored mica, essentially KAl₃Si₃O₁₀(OH)₂, used as an electrical insulator.</li><li>Archaic: a Russian.</li></ul><p><strong>Adjective</strong></p><ul><li>Of, relating to, or characteristic of Moscow, Muscovy, or the Muscovites.</li></ul>