pilaster

PILASTER

(in architecture) parastata -ae masculine and feminine (Vitr.) or parastas -adis feminine.

pilaster: părasta, ae, f.; or, părastătĭca, ae, f.: Vitr. 5, 1 §§ 6, 7: Plin. 33, 3, 15 (in either case the MSS. fluctuate between the two forms). (Parastas, in Vitr 10, 15, is an upright support in a catapult.)

pilaster

A pier or column engaged to a wall, generally used for ornament.