<p><strong>Noun</strong></p><ul><li>A partial or imperfect shadow outside the complete shadow of an opaque body, such as a planet, where the light from the source of illumination is only partly cut off.</li><li>The grayish marginal portion of a sunspot.</li><li>A shadowy, indefinite, or marginal area.</li><li>In U.S. Law, a right or set of rights implicit but not expressed in the U.S. Constitution or Bill of Rights.</li></ul>