<p><strong>Noun</strong></p><ul><li>a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth, appreciably reducing visibility.</li><li>any darkened state of the atmosphere, or the diffused substance that causes it.</li><li>a state of mental confusion or unawareness; daze; stupor.</li><li>a temporary state in which a medium, with suspension of personal consciousness, is controlled by an intelligence from without and used as a means of communication.</li></ul><p><strong>Verb</strong></p><ul><li>to cover or envelop with or as if with fog.</li><li>to confuse or obscure: The debate did little else but fog the issue.</li><li>to bewilder or perplex: to fog the mind.</li><li>to become enveloped or obscured with or as if with fog.</li></ul>