Vestal

Part of speech: noun (n.)

1. A virgin consecrated to Vesta, and to the service of watching the sacred fire, which was to be perpetually kept burning upon her altar.

2. A virgin; a woman pure and chaste; also, a nun. How happy is the blameless vestal's lot! Pope.

Part of speech: adjective (a.)

Of or pertaining to Vesta, the virgin goddess of the hearth; hence, pure; chaste.