Spina, the central wall of a Roman racecourse.
Stilted, raised, usually applied to an arch when its centre is above the top of the jambs from which it springs.
Struts, props.
Stupa, in Indian architecture, a mound or tope.
Stylobate, a series of steps, usually those leading up to a Classic temple.
Taas, a pagoda.
Tablinum, in a Roman house, the room between the atrium and the peristyle.
Talar, in Assyrian architecture, an open upper story.
Tenoned, fastened with a projection or tenon.
Tesselated, made of small squares of material, applied to coarse mosaic work.