Русско-англо-русский юридический словарь

VOW OF CHASTITY. The vow by which a person freely gives up the right to marriage, and adds the obligation of the virtue of religion to the duty of abstaining from all indulgence of sexual pleasure. (Catholic Dictionary)

The Vestal Virgins joined as girls and took a vow of chastity for 30 years; their most important role was to keep a fire in the temple of Vesta always burning. (Live Science)