<p><strong>Noun</strong></p><ul><li>a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel</li><li>a piece of glowing, charred, or burned wood or other combustible substance</li><li>charcoal (def 1)</li></ul><p><strong>Verb</strong></p><ul><li>to burn to coal or charcoal</li><li>to provide with coal</li><li>to take in coal for fuel (used without object)</li></ul>