Squinch: a small arch, set diagonally across the angle of a square space to transform the latter into an octagon.
Stalls: the fixed seats in a chancel for the clergy and choir.
Stanza: Italian for Chamber.
Steeple: the combination of tower and Spire. See Spire.
Stele: Stela: an upright tablet of stone or marble, often sculptured and engraved; serving as a tombstone, or boundary mark or milestone, etc.
Stellar Vaulting: See Rib.
Stepped: See Gable; Pyramid.
Stilted: applied to an arch when its curve begins some distance above the impost and is connected to the latter by vertical sections of moulding.
Strap Ornament: geometrical patterns formed of bands, that suggest straps of leather kept in place with studs.
Stretcher: in masonry, a brick or stone, laid lengthwise of the course. See Bond, Header.