A great success or big hit; something that becomes extremely popular or successful.
彼の新作映画は公開初週に大当たりした。
His new movie was a big hit in its opening week.
この商品の販売戦略がうまく、予想以上の大当たりになった。
The product's marketing worked well and it turned out to be a bigger hit than expected.
あのギャグは客席で大当たりを取り、会場が沸いた。
That joke was a huge hit with the audience and the place erupted.
A jackpot or big win (e.g., in gambling or a lottery).
宝くじで大当たりを引いて、人生が変わった。
I hit the jackpot in the lottery and my life changed.
パチンコで一度だけ大当たりを経験したことがある。
I've experienced a big win in pachinko just once.
彼は競馬で大当たりして、一晩で借金を返した。
He hit the jackpot at the races and paid off his debts in one night.
Being exactly right; a prediction or judgment that hits the mark.
君の予想が大当たりで、試合の結果はその通りになった。
Your prediction was spot on; the match ended exactly as you said.
その批評は大当たりで、後に多くの人が同じ意見を持った。
That review hit the mark, and later many people agreed.
直感が大当たりして、投資は成功した。
My hunch was right on the money and the investment succeeded.
A bumper crop; an unusually abundant harvest.
今年は天候に恵まれて米が大当たりだ。
This year the weather was kind and the rice crop is a bumper harvest.
柑橘類が大当たりで、農家は喜んでいる。
The citrus harvest was excellent and the farmers are pleased.
Excellent hitting in baseball; a player having a great batting performance.
彼はここ数試合で大当たりの打席が続いている。
He's had great hits at the plate in the last few games.
今日はチーム全体が大当たりで大量得点した。
Today the whole team was hitting well and they scored a lot.