What does 大当たり mean?
大当たり is a Japanese noun meaning “great success; big hit; smash hit; winner” in English. It can also be translated as “(hitting the) jackpot, being right on the mark (of a prediction), bumper crop” depending on context. It is written as 大当たり in kanji, おおあたり in hiragana, and ooatari in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
その映画は大当たりした。
The movie was a big draw at the box office.