<p><strong>Noun</strong></p><ul><li>the act of clearing</li><li>the distance between two objects; an amount of clear space: The bridge allowed a clearance of 37 feet at mean high water</li><li>a formal authorization permitting access to classified information, documents, etc.</li><li>Also called clearance sale: the disposal of merchandise at reduced prices to make room for new goods: He bought the coat for half price at a clearance</li><li>a clear space; a clearing: The house stood in a clearance among the trees</li><li>Banking: an exchange of checks and other commercial paper drawn on members of a clearinghouse, usually effected at a daily meeting of the members</li><li>Machinery: a space between two moving parts, left to avoid clashing or to permit relatively free motion</li><li>the angle between a face of a cutting tool, as a lathe tool, and the work</li><li>Nautical: the clearing of a ship at a port</li><li>Also called clearance papers: the official papers certifying this</li><li>Medicine/Medical: a test of the excretory function of the kidneys based on the volume of blood that is cleared of a specific substance per minute by renal excretion</li></ul>