| Abacus | The flat slab on the top of a capital. |
| Ambulatory | The processional aisle at the back of the high altar. |
| Apse | The eastern termination—semicircular or polygonal—of a choir or its aisles, or of a transept. |
| Arcade | A series of arches. |
| Pier-arcade | The piers and arches separating the side-aisles from the central aisle or nave. |
| Battlement | A notched or indented parapet. |
| Bay | The space between two piers from the floor to the roof. |
| Bosses | The ornamented keystones of a vault. |
| Buttress | A projecting support to a wall. |
| Cathedral | Any church, large or small, which contains the seat (cathedra) of a bishop. |
| Chantry-chapels | Private chapels; in which were chanted masses for the repose of the soul of the founder of the chapel. |
| Chevet | The ring of chapels round the east end of a choir or its aisles: e.g. Westminster. |
| Choir | (1) That part of the church where the clergy or monks sat. (2) The whole eastern limb of the church. |
| Clerestory | The upper story of a church. Also the row of windows in the upper story. |
| Corbel | A bracket of stone or wood. |
| Corbel-table | A row of corbels supporting a parapet or a projecting roof. |
| Crockets | Tufts of leaves arranged in bands. |
| Crossing | The space where nave and transepts intersect. Above it is often a central tower. |
| Crypt | The underground portion of a church. |
| Cusps | Spikes in the tracery of a window. |
| Dripstone | A projection running round the head of a window to throw off the rain. |
| Eaves | That part of a roof which overhangs the wall. |
| Elevation | (1) A geometrical drawing (i.e. not in perspective) of a vertical portion of a building. (2) The portion so drawn. |
| FaÇade | The principal external elevation of a building. |
| Feretory | (1) A portable shrine. (2) That part of the church which contained the pedestal of the shrine: e.g. Winchester; also called Saint’s Chapel. |
| Fillet | A narrow projecting stone band, like a piece of tape; square in section. |
| Flying buttresses | Tilted arches rising from the buttresses of the aisles to the clerestory wall to resist the thrusts of the high vault. |
| Gargoyle | A projecting water-spout. |
| Groined vault | A vault which, instead of ribs, has sharp edges or arrises. |
| Hood-moulding | An ornamental dripstone employed in interiors; especially over pier-arches. |
| Jambs | The sides of a window or doorway. |
| Label | A dripstone over the exterior of a doorway. |
| Lancets | Sharp, pointed windows; in the shape of a surgeon’s lancet. |
| Lierne-vault | Any vault which contains liernes: i.e., tie-ribs on the surface, which do not spring from an abacus, nor rise to the central boss. |
| Miserere | A carved bracket beneath the movable seat of a stall. |
| Moulding | Any architectural member is said to be moulded when its edge or surface presents continuous lines of alternate projections and recesses. |
| Mullions | Vertical bars in a window. |
| Nave | The western limb of a church, (1) including or (2) excluding its aisles. |
| Ogee arch | An arch, each side of which has a double curve; the upper part concave, the lower part convex. |
| Order | A compound arch is one which is built up of two or more Orders, or sub-arches, usually recessed. |
| Parapet | A low wall, not embattled, but with a horizontal upper surface, at the foot of a roof. |
| Piers | The supports of arches; sometimes cylindrical, sometimes polygonal; sometimes clusters of columns; sometimes masses of masonry ornamented with shafts. |
| Pilaster | A flattened column. |
| Pinnacles | Small spires employed to weight buttresses, etc. |
| Plinth | The pedestal of the base of a pier or shaft or wall. |
| Piscina | A water-drain, appertaining to the high altar. (1) A niche. (2) A shaft. (3) An opening in the pavement. |
| Presbytery | (1) The sanctuary only. (2) The whole of the space between the ritual choir and the east end: e.g., York and Lincoln and Ely—i.e., sanctuary plus retro-choir. |
| Quadripartite vault | One in which each compartment is divided into four cells by diagonal ribs. |
| Quatrefoil | An ornament with four lobes. |
| Refectory | The dining-hall or frater of a monastery. |
| Reredos | The screen at the back of a high altar: e.g., Winchester. |
| Ribs | The arcs which intersect to support the filling-in of a vault. |
| Romanesque | The style of Northern architecture intermediate between that of the Early Christian Basilican churches and that of the Gothic cathedrals. Anglo-Norman or Norman is one of its geographical subdivisions. |
| Roll | A rounded projecting moulding. |
| Rood | The crucifix. |
| Rood-loft | A beam, carrying the rood, placed above the rood-screen. The place of the rood-screen was at the west end of the ritual choir. |
| Sanctuary | The space between the ritual choir and the high altar. |
| Sedilia | Seats for the priest and his assistants on the south side of the sanctuary. |
| Sexpartite vault | One in which each compartment is divided into six cells by four diagonal and two intermediate ribs. |
| Shaft | A slender column. Vaulting-shafts supported a vault or ceiling. |
| Spandrils | The triangular spaces on either side of an arch. |
| Splay | A window-jamb which slants outwardly or inwardly from the glass. |
| Springers | The lower stones of the ribs of a vault. |
| Stilted arch | An arch elevated above the abacus by vertical masonry. |
| String-course or String | A projecting moulding, usually horizontal, running along a wall. |
| Thrust | The pressure exerted laterally and downward by an arch or vault. |
| Tracery | The straight or curved bars of stone which separate the lights in the arched part of a window. |
| Transept | A cross-arm of a church. |
| Transoms | Horizontal cross-bars of stone in a window. |
| Trefoil | An ornament with three lobes. |
| Triforium | (1) The space between the vault and the lean-to roof of an aisle. (2) The arcade in front of it. The triforium-space often forms a Blind Story. |
| Tympanum | (1) The space between the lintel and arch of a doorway. (2) The space enclosed by the triangular outline of PEEL, ST. GERMAIN, INTERIOR. Printed by Hazell, Watson & Viney, Ld., London and Aylesbury.
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