お孫まごさんFreq.FrequencyTop 50,000Meanings1noungrandchild (honorific)honorific or respectful (sonkeigo)Polite honorific term used when referring to someone else's grandchild. Not used for one's own grandchild.お孫まごさんはおいくつですか。How old is your grandchild?お孫まごさんが描かいた絵えを拝はい見けんしました。I saw the picture your grandchild drew.