<p><strong>Noun</strong></p><ul><li>the soft, diffused light from the sky when the sun is below the horizon, either from daybreak to sunrise or, more commonly, from sunset to nightfall.</li><li>the period in the morning or, more commonly, in the evening during which this light prevails.</li><li>a terminal period, especially after full development, success, etc.: the twilight of his life.</li><li>a state of uncertainty, vagueness, or gloom.</li></ul><p><strong>Adjective</strong></p><ul><li>of, relating to, or resembling twilight; dim; obscure: in the twilight hours.</li><li>appearing or flying at twilight; crepuscular.</li></ul>