Where does “вратня” come from?

вратня (Bulgarian) comes from Bulgarian врата, from Old Church Slavonic врата, from Proto-Slavic vòrta — gate, doors.

Ancestry of “вратня”, step by step

StepLanguageWordMeaning
1Bulgarianвратаdoor, gate, gates
2Old Church Slavonicвратаdoors
3Proto-Slavicvòrtagate, doors
Every word from Proto-Slavic vòrta →Every word from Old Church Slavonic врата →Every word from Bulgarian врата →