Where does “*dur” come from?

*dur (Proto-Germanic) comes from Proto-Germanic *durz, from Proto-Indo-European dʰwṓr, from Proto-Indo-European dʰwer- — door.

Ancestry of “*dur”, step by step

StepLanguageWordMeaning
1Proto-Germanic*durz—
2Proto-Indo-Europeandʰwṓrdoor
3Proto-Indo-Europeandʰwer-door

Words derived from “*dur”

Every word from Proto-Indo-European dʰwer- →Every word from Proto-Indo-European dʰwṓr →Every word from Proto-Germanic *durz →