Chalice (3)
'chalice' is the definition.
(I know that grail is a chalice)
This is the entire clue.
(Other definitions for grail that I've seen before include "The Holy ..., the legendary chalice used at the Last Supper" , "Chalice used by Jesus at the Last Supper" , "Holy object of quest" , "what some look for" , "Last Supper cup" .)
'chalice' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cup that I've seen before include "McCarthy, Walker or Maguire" , "Prize; vessel" , "Chalice; trophy" , "Trophy, drink" , "Trophy; drinking vessel" .)