Dictionary/お誕生日おたんじょうびOtanjoubiOther forms: 御誕生日お誕生日 (Otanjoubi) is a Japanese noun meaning “birthday”.MeaningsnounbirthdayKanji in お誕生日誕nativity生life日dayRelated wordsお前you先生teacher御免I'm sorry今日today今日はhello生きるto liveお母さんmotherお父さんfatherお願いしますplease有難うございますthank you明日tomorrow日day