grail
//ɡreɪl//
Noun
grailSingular
grailsPlural
1
A legendary sacred cup or dish, especially the Holy Grail, believed in medieval legend to have been used by Christ at the Last Supper and sought by knights of King Arthur's court.
The knights embarked on a quest to find the Holy Grail.
2
An object or goal that is eagerly pursued or sought after, often considered extremely difficult or impossible to attain.
Finding a cure for this disease has become the grail of modern medicine.