Where does “Hornaru” come from?

Hornaru (Romanian) comes from Romanian hornar, from Romanian horn, from Russian горн, from German horn, from Middle High German horn, from Old High German horn, from Proto-West Germanic horn, from Proto-Germanic hurną — army.

Ancestry of “Hornaru”, step by step

StepLanguageWordMeaning
1Romanianhornarchimney sweep
2Romanianhornchimney
3Russianгорнfireplace, hearth; forge, furnace; bugle,...
4Germanhornhorn musical instrument
5Middle High Germanhorn
6Old High Germanhornhorn
7Proto-West Germanichornhorn
8Proto-Germanichurnąhorn
9Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
10Proto-Indo-Europeankr̥-to turn, to bend
11Proto-Indo-Europeanker-army
Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-