Dictionary

Holy Grail

noun

: something that you want very much but that is very hard to get or achieve

the Holy Grail : the cup that is said to have been used by Jesus Christ and that was sought by knights during the Middle Ages

Full Definition of HOLY GRAIL

1
:  grail
2
often not capitalized :  an object or goal that is sought after for its great significance
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First Known Use of HOLY GRAIL

15th century

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