Of the ancient province of Rhaetia or the region of the Alps corresponding to this (see sense A. 1).

= Rhaetian, adj. 1.

Of or relating to the ancient Roman province of Rhaetia or the region of the Alps corresponding to this; = Rhaetian, adj. 1.

Of or pertaining to Bern (or Berne), a city and canton of Switzerland, or its inhabitants.

= Valaisan, n. adj.

Of or pertaining to Ticino or its inhabitants.

Of or pertaining to Valais or its people.