orchēstra, ae, f., = ὀρχήστρα.
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.