步韵[bù yùn]
词典use the rhyme sequence of a poem：次韵；步韵。
步韵[bù yùn]
use the rhyme sequence of a poem
1. （指音步韵律）两个短音后跟一个长音。放在元音上标示短音的发音符号（u形）。
(of a metric foot) characterized by two short syllables followed by a long one. a diacritical mark (u-curved) placed over a vowel to indicate a short sound.