Plural of grail; multiple legendary or sought-after cups or treasures, especially the Holy Grail in Arthurian legends.
Plural form of 'grail' from Old French 'graal,' used metaphorically to describe any highly prized or elusive goals or objects.
In business and science, people now use 'holy grail' as slang for the ultimate goal they're chasing—like physicists seeking the 'holy grail' of a unified field theory or programmers hunting for bug-free code.
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