A war that is entirely, primarily, or ostensibly religious in motivation; a war over religion.

(Christianity) The three persons of the Godhead: the Father, Son and Holy Spirit. / (US, informal) Three prestigious colleges in the US: Harvard, Yale, and Princeton.

The week preceding Easter containing Palm Sunday, Holy Monday, Holy Tuesday, Holy Wednesday (Spy Wednesday), Holy Thursday (Maundy Thursday), Holy Friday (Good Friday), and Holy Saturday.

(idiomatic, vulgar, slang) Expression of terror, awe, surprise, astonishment, etc., often at something seen for the first time or remembered immediately before using this term.

(Christianity) the hour of fasting and prayer before communion is to be taken. / (Ireland, informal) the hour between 2.30 pm and 3.30 pm that pubs formerly had to shut to comply with licencing laws.

(informal, usually derogatory) A member of any Christian church characterized by ecstatic behaviour; especially of the Pentecostal Church. / (informal, derogatory) A devoutly religious Christian person.

(Christianity) Maundy Thursday, the Thursday before Easter / (now rare) Ascension Day

(idiomatic) An expression of surprise or astonishment.

plural of holy grail

(Christianity) Jesus Christ, the Virgin Mary, and Joseph.