Lewis & Short

orthostăta, ae, m., = ὀρθοστάτης (that stands upright), in archit., the facing of a wall (pure Lat. frons), Vitr. 2, 8; 10, 19 fin. († orthrăgŏriscus, i, m., = ὀρθραγορίσκος, v. l. ap. Plin. 32, 2, 9, § 19, for orthagoriscus, q. v.)