What does お母さん mean?
お母さん is a Japanese noun meaning “mother (formal)” in English. It is written as お母さん in kanji, おかあさん in hiragana, and okaasan in romaji. This word is part of JLPT N5 vocabulary.
Example sentence
お母さんに口答えしてはいけませんよ。
Don't answer your mother back.