ㄅㄧˊㄩㄣˋyùnㄇㄨˇ

  1. 鼻音收尾韻母國語ㄢ(an)​、ㄣ(en)​、ㄤ(ang)​、ㄥ(eng)​

(of Chinese pronunciation)​ a vowel followed by a nasal consonant