Where does “brushlessness” come from?

brushlessness (English) comes from English brushless, from English Brush, from Middle English brusshe, from Old French broisse, from Vulgar Latin brustia, from Icelandic bursti, from Proto-Germanic burstiz, from Proto-Germanic bʰurstís — top, tip, point.

brushlessness (English): Absence of brushes

Definitions

  1. Absence of brushes

Ancestry of “brushlessness”, step by step

brushlessness traces back through two separate lines of ancestry.

via English brushless

StepLanguageWordMeaning
1EnglishbrushlessNot using brushes, of a motor that does not use...
2EnglishBrushAn implement consisting of multiple more or less flexible bristles or other filaments attached to a handle, used for any of various purposes including cleaning, painting, and arranging hair
3Middle Englishbrusshe
4Old Frenchbroisse
5Vulgar Latinbrustia
6Icelandicburstibrush
7Proto-Germanicburstizbristle
8Proto-Germanicbʰurstís
9Proto-Indo-Europeanbʰr̥s-tí-s
10Proto-Indo-Europeanbʰers-top, tip, point

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European bʰers-
brushlessness — Etymology, Origin & Word History | Etymology Explorer