noun, noun or participle which takes 'suru', intransitive verb
A solemn promise or declaration, often with a religious or formal connotation. Can be used as a noun or with する to mean 'to vow' or 'to swear an oath'.
彼は神に祈誓を立てた。
He made a vow to God.
彼女は禁
She swore an oath to abstain from alcohol.