the Rhaeto-Romance language spoken in southeastern Switzerland; it is an official language of Switzerland

of or relating to the Romansh language

Romansh (also spelled Rumantsch, Romansch or Romanche) is one of the four national languages of Switzerland, along with German, Italian and French. It is one of the three Rhaeto-Romance languages, believed to have descended from the Vulgar Latin variety spoken by Roman era occupiers of the region, and, as such, somewhat resembles Italian, French, Spanish and Catalan. It is spoken by about 50,000-70,000 people in the canton of Graubünden (Grisons), of which about 35,000 speak it as their first language.