- Thür (obsolete)
- Türe (dated, not known in many regions, especially where the final /ə/ has become mute)
Via Middle High German, from Old High German turi, from Proto-Germanic *duri- *durz, from Proto-Indo-European *dʰwer-, *dʰwor- (“doorway, door, gate”), *dhur-. Cognate with Middle Dutch dore (Dutch deur), Old Norse dyrr (Swedish dörr, Danish dør). The Germanic word also existed in different stem-endings: *dora-, *durą (German Tor, Old English dor → English door), *duru- (Old English duru).
- Tür in Duden online