Vocabulary What does 孫娘 (まごむすめ, magomusume) mean? 孫娘 (まごむすめ, magomusume) means granddaughter. Quick factsReadingまごむすめRomajimagomusumePart of speechnoun 孫娘まごむすめmagomusumegranddaughter1noun granddaughterAlso written: 孫むすめKanji in this word孫grandchild; descendant娘daughter; girl