To hope for a good result or to wish for luck in a situation.
You have the interview tomorrow, so keep your fingers crossed for a great opportunity.
내일 면접이 있어서 큰 기회를 위해 손가락을 걸어라.
To express uncertainty about a future event and hope for a positive outcome.
We're waiting for the test results, so let's keep our fingers crossed for good news.
우리는 시험 결과를 기다리고 있어서 좋은 소식을 위해 손가락을 걸어라.