1. A holy relic or sacred object; something held as sacred or inviolable.
Usage: archaic; chiefly historical

1. An archaic oath or exclamation used to express surprise, emphasis, or swearing.
Usage: archaic; obsolete; used in Middle English and Early Modern English literature

Examples

• By halidome, what strange news you bring!
• The knight swore by halidome to defend the castle.
• In medieval texts, halidome appears as a solemn oath.
• She clutched the halidome as proof of her devotion.
• Halidome! I never expected such a turn of events.