<p><strong>Adjective</strong></p><ul><li>shining brightly; sparkling; glittering; lustrous: the brilliant lights of the city.</li><li>distinguished; illustrious: a brilliant performance by a young pianist.</li><li>having or showing great intelligence, talent, quality, etc.: a brilliant technician.</li><li>strong and clear in tone; vivid; bright: brilliant blues and greens; the brilliant sound of the trumpets.</li><li>splendid or magnificent: a brilliant social event.</li></ul><p><strong>Noun</strong></p><ul><li>Jewelry: a gem, especially a diamond, having any of several varieties of the brilliant cut.</li><li>Printing: a size of type about 3½-point.</li></ul>