from The American Heritage® Dictionary of the English Language, 4th Edition
- n. In Arthurian legend, a seat at King Arthur's Round Table kept for the knight destined to find the Holy Grail and fatal for any other occupant.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the legendary seat at King Arthur's Round Table reserved for the knight who would find the Holy Grail; it was fatal for anyone else to sit in it
Sorry, no etymologies found.