n.

1. 管弦樂隊[C][G]
   The orchestra played a Mozart symphony.

   樂隊演奏了一首莫札特的交響曲。

   He is a violoncellist in a symphony orchestra.

   他是交響樂團中的大提琴手。

2. （劇場中的）樂隊席[C]
3. 管弦樂器[C]
4. 【美】（劇場的）樓下座位；（一樓前方的）頭等座位[C]

n.

1. [treated as sing. or pl.] a group of instrumentalists, especially one combining string, woodwind, brass, and percussion sections.
2. (also orchestra pit) the part of a theatre where the orchestra plays, typically in front of the stage and on a lower level.
3. N. Amer. the stalls in a theatre.
4. the semicircular space in front of an ancient Greek theatre stage where the chorus danced and sang.