Where does “dorsair” come from?

dorsair (Scottish Gaelic) comes from Scottish Gaelic doras, from Old Irish dorus, from Proto-Celtic dworestus, from Proto-Celtic *dwār, from Proto-Indo-European dʰwṓr, from Proto-Indo-European dʰwer- — door.

dorsair (Scottish Gaelic): doorkeeper, porter

Definitions

  1. doorkeeper, porter

Ancestry of “dorsair”, step by step

StepLanguageWordMeaning
1Scottish Gaelicdorasdoor, doorway; wicket gate; opening
2Old Irishdorusdoor
3Proto-Celticdworestusdoor
4Proto-Celtic*dwārdoor
5Proto-Indo-Europeandʰwṓrdoor
6Proto-Indo-Europeandʰwer-door
Every word from Proto-Indo-European dʰwer- →Every word from Proto-Indo-European dʰwṓr →Every word from Proto-Celtic *dwār →