Etymology
1. Inherited from Middle English floor, floour, flor, flore, flour, flur, vlor, from Old English flōr (“floor, pavement; deck; gangplank”), from Proto-West Germanic *flōr, from Proto-Germanic *flōraz (“ground; floor”), from Proto-Indo-European *pleh₂ros (“floor”), from Proto-Indo-European *pleh₂- (“flat”).
2. Cognates
3. Cognate with Scots flair, fluir (“floor”), Saterland Frisian Floor (“floor”), Dutch vloer (“floor”), German Flur (“corridor, hall, hallway, stairwell”), Limburgish Vlǫǫr (“floor”), Low German Floor (“hallway or entrance to a house”), Luxembourgish Flouer (“countryside, farmland”); also Breton and Cornish leur (“floor, ground, surface”), Irish lár (“floor, ground”), Scottish Gaelic làr (“earth, floor, ground”), Manx laare (“bottom, deck, floor; level, storey”), Welsh llawr (“floor, ground”), Latin plānus (“even, flat, level”), Greek απαλάμη (apalámi), παλάμη (palámi, “hand, palm”), Albanian pëllëmbë (“palm”), Latgalian pluons (“thin”), Latvian plāns (“thin”), Lithuanian plonas (“fine, slender, thin”), Belarusian, Macedonian, Russian, and Ukrainian по́ле (póle, “field”), Bulgarian поле́ (polé, “field”), Czech, Polish, and Slovak pole (“field”), Serbo-Croatian по̏ље, pȍlje (“field”), Slovene polje (“field”), Hittite 𒁄𒄭𒅖 (palḫis, “broad, wide”). Related to flat. See: Manx '
laare'.