<p><strong>Noun</strong></p><ul><li>the highest point or part, as of a hill, a line of travel, or any object; top; apex.</li><li>the highest point of attainment or aspiration; the summit of one's ambition.</li><li>the highest state or degree.</li><li>the highest level of diplomatic or other governmental officials; a meeting at the summit.</li><li>summit meeting.</li></ul><p><strong>Adjective</strong></p><ul><li>of or relating to a summit meeting: summit talks.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to take part in a summit meeting.</li><li>to reach a summit: summited after a 14-hour climb.</li><li>(used with object) to reach the summit of.</li></ul>