It means native of Frías, native or related to Frías, a municipality in Spain, in the Province of Burgos. It was formerly called Aguas Frías. The native of La Fría in the state of Táchira, in Venezuela, is called Friense.
Gentilicio de Frías (originally Aguas Fridas), a beautiful village in the north of Burgos in the region of Las Merindades. Together with the Onienses of Oña and the Pozanos of Poza de la Sal, they form the Commonwealth of Raíces de Castilla. My land of Asturias is beautiful, as are all the half-abandoned villages of our Castile.