Where does “fjellrype” come from?

fjellrype (Norwegian Bokmål) comes from Norwegian Bokmål fjell, from Old Norse fjall, from Proto-Germanic fellą, from Proto-Indo-European pel- — to cover, to wrap; skin, hide, cloth; to fold.

Ancestry of “fjellrype”, step by step

fjellrype traces back through two separate lines of ancestry.

via Norwegian Bokmål fjell

StepLanguageWordMeaning
1Norwegian Bokmålfjella mountain
2Old Norsefjallmountain
3Proto-Germanicfelląskin, hide
4Proto-Indo-Europeanpel-to cover, to wrap; skin, hide, cloth; to fold

via Norwegian Bokmål rype

StepLanguageWordMeaning
1Norwegian Bokmålrypea grouse or ptarmigan; girl
2Old Norserjúpaptarmigan
3Proto-Indo-Europeanh₁rewg-to belch; to roar
Every word from Proto-Indo-European pel- →Every word from Proto-Germanic fellą →Every word from Old Norse fjall →