GLOSSARY OF ARCHITECTURAL
Terms   L - O

• LABEL MOULDING A square-arched moulding above windows and doors.

• LANCET A narrow pointed window.

• LANTERN A windowed superstructure at the top of a roof or dome; a small cupola.

• LINTEL The horizontal supporting member at the top of a door or window.

• LOGGIA A gallery that is open on one or more sides, often with an arcade.

• LOOPHOLE In military architecture, a narrow hole in a wall through which ordnance or arms can be fired.

• MANSARD ROOF A roof that has a double slope, with the lower slope steeper and longer than the upper one; a gambrel roof. Named after the seventeenth-century French architect François Mansart.

• MASONRY Stone, brick, concrete, tile, or any other non-organic and non-metallic building material.

• MORTISE In a timber connection, a slot into which a tenon is inserted.

• MOULDING A shaped decorative element, usually a horizontal band, that projects slightly from the surface of a wall.

• MULLION A thin upright member within a window or between adjacent windows.

• NAVE The principal room or space in a church, which accommodates the congregation.

• OGEE A double curve, usually used to describe an arch or a moulding.