orchestra

noun

• 1 [treated as singular or plural] a group of instrumentalists, especially one combining string, woodwind, brass, and percussion sections and playing classical music.

• 2 (also orchestra pit) the part of a theatre where the orchestra plays, typically in front of the stage and on a lower level.
• North American the stalls in a theatre.

• 3the semicircular space in front of an ancient Greek theatre stage where the chorus danced and sang.