Holy Grail noun
plural Holy Grails
plural Holy Grails
Learner's definition of HOLY GRAIL
1
[count] or holy grail : something that you want very much but that is very hard to get or achieve梦寐以求却十分难以得到之物 2
the Holy Grail : the cup that is said to have been used by Jesus Christ and that was sought by knights during the Middle Ages圣杯(据说是耶稣基督用过的杯子,为中世纪时期骑士追寻之圣物)