The Grail or the Holy Grail is the cup that was used by Jesus Christ at the Last Supper. In medieval times, many people tried to find the Grail without success.
N-SING
渴望得到的東西；努力追求的目標
If you describe something as a grail or a holy grail, you mean that someone is trying very hard to obtain or achieve it.
例句
The discovery is being hailed as The Holy Grail of astronomy.這一發現圓了天文學界的一個夢想。
英英詞典釋義
Noun
1. (legend) chalice used by Christ at the last supper