vestal virgin

noun
1.
(in ancient Rome) one of four, later six, virgins consecrated to Vesta and to the tending of the sacred fire on her altar.
Origin
1400-50; late Middle English
British Dictionary definitions for vestal virgin

vestal virgin

noun
1.
(in ancient Rome) one of the four, later six, virgin priestesses whose lives were dedicated to Vesta and to maintaining the sacred fire in her temple