Synonyms for grail

So in Parsifal the white dove descends, overshadowing the Grail.

The Grail vision had, then, taught the "guileless one" nothing.

Is the Grail, too, then turned into a mocking spirit to the unhappy Amfortas?

In these modern days he rides abroad, seeking the Graft instead of the Grail.

It complimentarily introduces a hint or two of Wagner's Grail motif.

It likewise mentions two visits of Gawain to the Grail Castle.

They speak to him concerning the Grail, and direct him to take the road to the right.

The Grail damsel appears and tells Perceval his uncle is dead.

Brons, thy father, dwells in these isles of Ireland, and with him is the Grail.

Both knights are too full of sin to continue in the quest of the Grail.