- [countable + singular or plural verb]
a group of nine people or things, especially nine musicians 九人组；九个一组；（尤指）九重奏乐团，九重唱组合 - [countable]
a piece of music for nine singers or musicians 九重奏（曲）；九重唱（曲）
Word Originmid 19th cent.: from Italian nonetto, from nono ‘ninth’, from Latin nonus.