A couloir is a steep mountainside gorge. Bise is a cold North wind. Wind names are very interesting. Nowadays, they name cars after them: sirocco. Truchas are we anglophones call trouts, the francophones truites, and what are they called in Irish? As for Roman(t)sh, I gave it a tiny bit more status than it seems to have. It's an "offical language for communicating with Romansh-speaking persons." Which I take to mean that you cannot force an Engadine to speak German, but you don't have to translate all documents into it. It is related to Friulan, in which language, the Italian filmmaker Pasolini wrote some poems.

http://www.eda.admin.ch/washington_emb/e/home/culedu/cultur/langua.html