Yennieung

Yennieung (letter: ㆁ; name: 옛이응) is an archaic consonant letter of the Korean alphabet, Hangul. It was associated with a voiced velar nasal[ŋ] sound. In Unicode, its name is spelled yesieung, following the ISO/TR 11941 romanization system. The letter is no longer used in modern Hangul orthographies. Its function gradually merged with that of the letter ㅇ; that letter now fulfills both their previous roles.