wài​sūn

maternal grandson

外孙 (外孫) wài​sūn
maternal grandson noun
a son of one's daughter or a male descendant via the female line

Grandma Wang goes to the kindergarten every day to pick up her grandson from school.

Frequency

Movie subtitles
2.03 per million appears in 1% of films
Written text
1.30 per million

Sources

Definitions
CC-CEDICT