お誕生日 (otanjoubi) Japanese meaning: birthday (polite) | KotomoraNext week is my mother's birthday.
Usage patterns
〈人〉のお誕生日はいつですかasking politely when someone's birthday is
When is Mr. Tanaka's birthday?
お誕生日を迎えるto have (reach) one's birthday
Next month, my grandmother will turn eighty.
〈人〉にお誕生日プレゼントをあげるto give someone a birthday present
I gave my sister a birthday present.