<p><strong>Adjective:</strong></p><ul><li>highly successful and aggressive: a hotshot lawyer; a hotshot account exec.</li><li>displaying skill flamboyantly: a hotshot ballplayer.</li><li>moving, going, or operating without a stop; fast: a hotshot express.</li></ul><p><strong>Noun:</strong></p><ul><li>an impressively successful or skillful and often vain person.</li><li>Railroads: an express freight train.</li><li>a firefighter.</li></ul>