I. The place where the Senate sat in the theatre, the orchestra: “in orchestrā senatorum sunt sedibus loca destinata,” Vitr. 5, 6; Juv. 7, 47; Suet. Caes. 39; id. Aug. 35; 44; id. Claud. 21 et saep.—
B. Transf., the Senate (poet.): “similesque videbis Orchestram et populum,” Juv. 3, 178.—
II. Another place on the stage, acc. to Fest. p. 181 b; cf. Müll. ad h. l.