Rhaetian

Etymology
From.

Noun

 * 1) A native or inhabitant of Rhaetia in central and eastern Switzerland.

Adjective

 * 1) Pertaining to the culture or geography of Raetia.

Proper noun

 * 1)  An extinct non-Romance language spoken in the ancient region of Raetia in the eastern Alps in pre-Roman and Roman times.
 * 2) Rhaeto-Romance, a continuum of modern Romance languages spoken in much the same region.