Where does “deugorn” come from?

deugorn (Welsh) comes from Proto-Indo-European deu-, from Middle Welsh deu, from Proto-Brythonic *dow, from Proto-Celtic *duwo, from Proto-Indo-European dwóh₁ — two.

deugorn (Welsh): two-horned, bicorn

Definitions

  1. two-horned, bicorn

Ancestry of “deugorn”, step by step

deugorn traces back through two separate lines of ancestry.

via Proto-Indo-European deu-

StepLanguageWordMeaning
1Proto-Indo-Europeandeu-lack, fail; to injure, destroy, burn; to do,...
2Middle Welshdeutwo
3Proto-Brythonic*dowtwo
4Proto-Celtic*duwotwo
5Proto-Indo-Europeandwóh₁two

via Welsh corn

StepLanguageWordMeaning
1Welshcornhorn; chimney
2Middle Welshcornhorn
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Celtic *duwo →Every word from Proto-Brythonic *dow →