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• Holy Grail
  Holy Grail

  noun

  Also the Grail a cup or chalice that in medieval legend was associated with unusual powers, especially the regeneration of life and, later, Christian purity, and was much sought after by medieval knights: identified with the cup used at the Last Supper.
• Grail, Holy
  Grail, Holy

  A cup or bowl that was the subject of many legends in the Middle Ages. It was often said to have been used by Jesus at The Last Supper. The Grail was supposedly transported to Britain, where it became an object of quest for the knights of the Round Table.

Holy Grail

American  

[hoh-lee greyl] / ˈhoʊ li ˈgreɪl /

Or holy grail

noun

1. Arthurian Legend, Teutonic Legend. Also the Grail a cup or chalice that in medieval legend was associated with unusual powers, especially the regeneration of life and, later, Christian purity, and was much sought after by medieval knights: identified with the cup used at the Last Supper.

   Wagner adapted the story of his opera Parsifal from the medieval legends of the search for the Holy Grail.

2. Usually holy grail grail.

   Brisket is the holy grail of barbecue because it's considered so difficult to cook well.

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Holy Grail British  

noun

1. 1. Also called: Grail.   Sangraal.  (in medieval legend) the bowl used by Jesus at the Last Supper. It was allegedly brought to Britain by Joseph of Arimathea, where it became the quest of many knights

   2. (in modern spirituality) a symbol of the spiritual wholeness that leads a person to union with the divine

2. informal any desired ambition or goal

   the Holy Grail of infrared astronomy

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Grail, Holy Cultural  

1. A cup or bowl that was the subject of many legends in the Middle Ages. It was often said to have been used by Jesus at The Last Supper. The Grail was supposedly transported to Britain, where it became an object of quest for the knights of the Round Table.

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Discover More

By extension, a “holy grail” is any esteemed object long sought for or attained only after great endeavor.

Etymology

Origin of Holy Grail

First recorded in 1580–90

Example Sentences

Cornell University scientists have taken a major step toward developing a safe, reversible, long-acting and 100% effective nonhormonal male contraceptive, considered the holy grail of male contraception.

From Science Daily • Apr. 7, 2026

Your gut biome is the holy grail of wellness, so it’s only natural us humans would want to find it, conquer it and aggressively exploit it.

From Los Angeles Times • Apr. 1, 2026

The value of the Japanese playing cards was illustrated recently when one described as the "holy grail" sold for £30,000.

From BBC • Mar. 27, 2026

A self-described "techie guy," Davies said the platform's current obsession is on giving creators nuanced control over creating or editing footage -- something he described as the company's "holy grail."

From Barron's • Mar. 17, 2026

“This is really the holy grail of games,” he said, dealing the cards one by one.

From "The Boy in the Black Suit" by Jason Reynolds