n. A small valley.n. An ecclesiastical title in the Roman Catholic and Anglican churches, which has had several applications.n. In universities, originally, the head of a faculty (and most historical writers consider a dean as essential to the existence of a faculty).n. The oldest member in length of service of a constituted body, or a body of persons of equal rank, of whom he is the prescriptive leader in all joint action: as, the dean of the diplomatic corps; the dean of the French Academy; the dean of the Sacred College (the oldest of the cardinals, who possesses high authority by right of his seniority).n. The president for the time being of an incorporation of barristers or law practitioners.n. In Scotland, the elected head of the merchant company or gildry of a royal burgh, who is a magistrate of the burgh for the supervision of all matters relating to the erection and character of buildings. The office in the full sense now exists only in Edinburgh, Glasgow, Aberdeen, and Perth, its duties in other burghs being performed by an officer bearing the same title, elected by the town council.