[noun] [C + singular or plural verb] - a usually large group of musicians who together play many different instrumentsthe City of Birmingham Symphony Orchestrathe New York Philharmonic OrchestraThe school orchestra is/are practising in the hall at the moment.Orchestra is US for stalls (THEATRE)We've got seats in the orchestra for tonight's concert.An orchestra pit is the area of a theatre in which musicians play their instruments, and which is in front of, or under the front of, the stage.
ORCHESTRA
Meaning of ORCHESTRA in English
Cambridge English vocab. Кембриджский английский словарь. 2012