weapon oath

English

Noun

weapon oath (plural weapon oaths)

1. A solemn oath sworn upon a weapon, such as practised in ancient Norse tradition.
   • 2017, Neil Gaiman, Norse Mythology, Bloomsbury Publishing, page 59:

     "The wall is growing apace," he said. "And we swore an unbreakable oath, a ring-oath and a weapon-oath, that if he finishes building his wall in time, we will give him the sun and the moon[.]".