eighth note

1. 八分音符
   An eighth note is a musical note that has a time value equal to half a quarter note.

in BRIT, use 英国英语用 quaver

1. Eighth is the Olympic Games security issues, there are unexpected events, some of the conventional fault, we must note that.
   第八是奥运安全问题，有突发事件，也有一些常规的故障，我们都要注意到。

noun

1. a musical note having the time value of an eighth of a whole note

   Synonym:    quaver