お子さん

(1)a human offspring (son or daughter) of any age; "they had three children"; "they were able to send their kids to college"

(2)様々な年齢の人間の子供（息子あるいは娘）

(3)an immature childish person; "he remained a child in practical matters as long as he lived"; "stop being a baby!"

(4)未熟で子供じみた人

(1)