What does おっぱい mean?
おっぱい is a Japanese noun meaning “boobs; boobies; breasts; tits” in English. It can also be translated as “breast milk” depending on context. It is written as おっぱい in hiragana, and oppai in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
おっぱいはまだそんなに出ません。
Her breasts don't give much milk yet.