Advance ㅁ firstborn in Korean: 맏이’s meaning and pronunciation firstborn in Korean is 맏이. For examples, you can use like [집안의 맏이, 맏이 노릇]. In this post you will learn how to pronounce and use firstborn in Korean along with examples. 2022.12.21 Advance ㅁAdvanced WordsWordsㅁ