Horizontal member at the bottom of a window or door frame; sometimes spelt cill. Also the horizontal member at the base of a timber-framed wall, into which the posts and studs are tenoned.
Of a roof: without purlins or other longitudinal members above the springing of the rafters. Compare double-framed.
(Scots): Sloping or shaped stones finishing a gable upstanding from the roof. A skewputt is a bracket at the bottom end of a skew.
Skew arch
An arch spanning responds not diametrically opposed; hence also skew bridge.
Slab block
A multi-storey block with flats approached from corridors or galleries from service cores at intervals or towers at the ends (plan also used for offices, hotels etc.)
Covering of overlapping slates on a wall, which is then said to be slate-hung. Tile-hanging is similar.
Slop stone
(Irish): Drainage stone designed to carry kitchen waste through the thickness of a wall.
In a greater medieval church, a covered way or passage leading east from the cloisters between transept and chapter house.
Of masonry, with courses broken by smaller stones (snecks).
(lit. ceiling): Underside of an arch (also called an intrados), lintel, etc. Soffit roll: medieval roll moulding on a soffit.