1.NounA solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order.
"The old hermit, up in the mountains, took a vow of silence."
2.NounA declaration or assertion.
3.NounA votive offering.
4.VerbTo make a vow; to promise.
5.VerbTo make a vow regarding (something).
"The wronged woman vowed revenge."
6.VerbTo declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation.