Specifically the cup used in Christian Eucharist services.
Holy Grail
Refers to the legendary cup used by Christ at the Last Supper, often sought in medieval legends.
The priest raised the chalice with both hands.
King Arthur's knights sought the Holy Grail.
Rarely used kanji form; 盃 is a variant of 杯.
From 聖 (holy) + 杯 (cup). The term is used in Christian contexts for both the communion chalice and the legendary Holy Grail.