CHOIR That part of a church to the east of the nave where the services are celebrated, also called chancel, and frequently separated from the nave by an open screen of stone or wood. CINQUEFOIL An ornamental foliation used in arches, tracery, etc., and composed of projecting points or cusps, so arranged that the opening resembles five leaves. CLERESTORY Possibly the _clear_ storey. An upper storey standing above or clear of the adjacent roofs, and pierced by windows to give increased light. CLOISTER A covered walk or ambulatory forming part of a cathedral or college quadrangle. CLUSTERED COLUMN A pier made up of several columns or shafts in a cluster. COLONNADE A row or rows of columns supporting a roof or building. CORBEL Usually a moulded or carved ornament projecting from the walls, acting as a bracket and capable of bearing a super-incumbent weight. CORNICE The horizontal termination of a building in the form of a moulded projection. COURSE A continuous and regular line of stones or bricks in the wall of a building. CROCKETS Projecting ornaments in the form of leaves, flowers, etc., used to embellish the angles of pinnacles, spires, gables, canopies, etc. CROSS The accepted symbol of the Christian religion and an architectural church ornament usually placed upon the apex of the gable. A large cross called a rood was at one time always placed over the entrance to the chancel. The cross was worn as a personal ornament ages before the Christian era by the Assyrians, and we are told that the Druids also used this symbol in very early times. CRYPT Sometimes called the Undercroft, a vaulted chamber, usually underground and, in churches, rarely extending beyond the area of the choir or chancel, and often of less dimensions. CUSPS Projecting points giving the foliated appearance to tracery, arches, panels, etc. DORMER A gabled window pierced through a sloping roof. DRIPSTONE A projecting ledge or narrow moulding over the heads of doorways, windows, etc., to carry off the rain. FAN-TRACERY Tracery in which the ribs form a fan-like appearance and diverge equally in every direction. (Peculiar to the late Perp.) FLAMBOYANT Tracery whereof the curves assume flame-like waves and shapes.