大型管弦乐队(group，usually fairly large，of musicians who play together on various instruments，generally including string，woodwind，brass，and percussion instruments)[C，Gp]：a dance/string/symphony～舞蹈/弦乐/交响乐队;He plays the violin/flute in an～.他在管弦乐队里拉小提琴/吹笛子。He conducts the Boston Symphony O～.他指挥波士顿交响乐团。

→or′chestral adj 管弦乐队演奏的;管弦乐的;

【辨异】orchestra与band的区别见BAND²。