Definitions from Wiktionary ( )

▸ noun:  (music) A large group of musicians who play together on various instruments, usually including some from strings, woodwind, brass and/or percussion; the instruments played by such a group.
▸ noun:  A semicircular space in front of the stage used by the chorus in Ancient Greek and Hellenistic theatres.
▸ noun:  The area in a theatre or concert hall where the musicians sit, immediately in front of and below the stage, sometimes (also) used by other performers.

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