Though I learned the word "grail" from books I read when I was quite young, I never thought
until just now to look it up, to learn its pedigree. I was surprised to find it derives ultimately
from "krater'
Grail
5ME graal < OFr < ML gradalis, flat dish, cup < ? VL *cratalis < L crater, mixing bowl: see CRATER6 Medieval Legend the cup or platter used by Jesus at the Last Supper, and by Joseph of Arimathea to collect drops of Jesus‘ blood at the Crucifixion: the quest for the Grail, which disappeared, is treated in Malory‘s Morte Darthur, Wagner‘s Parsifal, etc. Also Holy Grail