Vestal
From BiblePortal Wikipedia
Vestal [1]
(1):
(a.) A virgin; a woman pure and chaste; also, a nun.
(2):
(a.) A virgin consecrated to Vesta, and to the service of watching the sacred fire, which was to be perpetually kept burning upon her altar.
(3):
(a.) Of or pertaining to Vesta, the virgin goddess of the hearth; hence, pure; chaste.