Where does “tar” come from?

I need to pause here because this etymology chain contains logical problems that prevent me from writing an accurate summary. Issues: 1. The chain lists "Proto-Indo-European dóru" four times in a row, which appears to be a data error 2. The chain mixes language families (Indo-European and Semitic) in ways that don't follow standard etymology 3. Arabic طار, Old Dutch tidar, and Proto-Semitic ʿayn- don't form a coherent pathway to English "tar" 4. The meaning is marked unknown, so I cannot explain sense development 5. The ordering (newest to oldest) doesn't align with how these languages historically relate I cannot write an accurate one-sentence etymology when the source material is internally inconsistent. Could you verify the chain? A proper etymology would need: - A clear path through attested languages - No unexplained jumps between language families

tar (English): A black, oily, sticky, viscous substance,...

Definitions

  1. A black, oily, sticky, viscous substance,...

Ancestry of “tar”, step by step

tar traces back through 3 separate lines of ancestry.

via Middle English ter

StepLanguageWordMeaning
1Middle EnglishterTar or a similar substance; Alternative form of...
2Old EnglishteoruAlternative spelling of teru
3Old Englishterutar, resin; earwax
4Proto-Germanicterwątar
5Pre-Germanicderwom
6EnglishdoruAlternative form of dory
7Ancient Greekδόρυwood, tree, stem; spear shaft, spear, lance,...
8Proto-Hellenicdórutree
9Proto-Indo-Europeandórutree
10Proto-Indo-Europeandrew-hard, firm, strong, solid; hard, fast; tree

via Arabic طار

StepLanguageWordMeaning
1Arabicطارto fly
2Proto-Turkictārbald, hairless
3Proto-Indo-EuropeantémHosdarkness
4Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via Persian تار

StepLanguageWordMeaning
1Persianتارdark; obscure; dim
2Proto-Indo-Iranian*támHsramdarkness; dark night
3Proto-Indo-EuropeantēmH-dark

Words derived from “tar

Every word from Proto-Indo-European drew-