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1. (usu. cap.) a cup or chalice that in medieval legend was associated with unusual powers and was much sought after by knights: identified with the cup used at the Last Supper and given to Joseph of Arimathea.
2. (sometimes cap.) any greatly desired and sought-after objective.Also called Holy Grail.
[1300–50; < Anglo-French grahel, Old French gräel, grel < Medieval Latin gradālis platter, of uncertain orig.]
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