Where does “lavande” come from?

lavande (Middle English) comes from Middle English laven, from Old French laver, from Latin lavō, from Proto-Italic lawaō, from Proto-Indo-European léwh₃eti, from Proto-Indo-European lewh₃- — to wash.

Ancestry of “lavande”, step by step

StepLanguageWordMeaning
1Middle EnglishlavenTo clean with water; to wash or bath; To gush or...
2Old Frenchlaverto wash; to get washed
3Latinlavōto wash, bathe
4Proto-Italiclawaō—
5Proto-Indo-Europeanléwh₃eti—
6Proto-Indo-Europeanlewh₃-to wash
Every word from Proto-Indo-European lewh₃- →Every word from Proto-Indo-European léwh₃eti →Every word from Proto-Italic lawaō →