<p><strong>Noun</strong></p><ul><li>anything that serves to indicate, warn, direct, command, or the like, such as a light, a gesture, an act, etc.</li><li>something agreed upon or understood as the occasion for concerted action.</li><li>an act, event, or the like that causes or incites some action.</li><li>a token; indication.</li><li>an electrical quantity or effect, as current, voltage, or electromagnetic waves, that can be varied in such a way as to convey information.</li><li>a play that reveals to one's partner a wish that they continue or discontinue the suit led.</li></ul><p><strong>Adjective</strong></p><ul><li>serving as a token or indication; used in communicating an intention, warning, or command.</li><li>unusual; notable; outstanding.</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to make a token or indication to.</li><li>to communicate or make known by a token or indication.</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to make communication by something that serves to indicate, warn, direct, command, or the like.</li></ul><p><strong>End of Response</strong></p>