Where does “floor” come from?

floor (Translingual) comes from English floor, from Middle English flor, from Old English flōr, from Proto-Germanic flōraz, from Proto-Indo-European pleh₂ros, from Proto-Indo-European pleh₂- — flat.

Ancestry of “floor”, step by step

StepLanguageWordMeaning
1EnglishfloorThe interior bottom or surface of a house or...
2Middle EnglishflorA floor; the bottom surface of a room or...
3Old Englishflōrfloor, pavement, ground; floor, pavement, ground,...
4Proto-Germanicflōrazground; floor
5Proto-Indo-Europeanpleh₂rosflat; floor
6Proto-Indo-Europeanpleh₂-flat
Every word from Proto-Indo-European pleh₂-Every word from Proto-Indo-European pleh₂rosEvery word from Proto-Germanic flōraz