Where does “lavatory” come from?

lavatory (French) comes from English lavatory, from Middle English lavatorie, from Late Latin lavatorium, from Latin lavō, from Proto-Italic lawaō, from Proto-Indo-European léwh₃eti, from Proto-Indo-European lewh₃- — to wash.

lavatory (French): public toilet

Definitions

  1. public toilet

Ancestry of “lavatory”, step by step

StepLanguageWordMeaning
1EnglishlavatoryA vessel or fixture for washing, "particularly:";...
2Middle EnglishlavatorieA receptacle to hold water used for religious...
3Late LatinlavatoriumA washroom or place, a lavatorium
4Latinlavōto wash, bathe
5Proto-Italiclawaō
6Proto-Indo-Europeanléwh₃eti
7Proto-Indo-Europeanlewh₃-to wash
Every word from Proto-Indo-European lewh₃-