Where does “druh₂-ó-m” come from?

druh₂-ó-m (Proto-Indo-European) comes from English doru, from Ancient Greek δόρυ, from Proto-Hellenic dóru, from Proto-Indo-European dóru, from Proto-Indo-European drew- — hard, firm, strong, solid; hard, fast; tree.

Ancestry of “druh₂-ó-m”, step by step

StepLanguageWordMeaning
1EnglishdoruAlternative form of dory
2Ancient Greekδόρυwood, tree, stem; spear shaft, spear, lance,...
3Proto-Hellenicdórutree
4Proto-Indo-Europeandórutree
5Proto-Indo-Europeandrew-hard, firm, strong, solid; hard, fast; tree

Words derived from “druh₂-ó-m

Every word from Proto-Indo-European drew-Every word from Proto-Indo-European dóruEvery word from Proto-Hellenic dóru