From Proto-Indo-European*bʰreuk- (“to stroke, to rub”) (whence also brukt, q.v.), from a stem *bʰer- (“to cut, to rub, to split; to hit”) (whence also berzt, q.v.). The meaning evolution was probably: “to scrub, to grate” > “to rub, to wipe” (a meaning still conserved in the erstwhile iterative form braucīt, and sometimes in braukt itself; see below) > “to drag, to slide” > “to make (a vehicle) slide, run” > “to go, to ride (on a vehicle)” (note that the oldest Baltic vehicles moved by sliding, without wheels). Cognates include Lithuanianbràukti “to stroke, to rub, to pull (leaves, berries etc. stuck in one's hands), to wipe (tears, sweat),” colloquially also “to ride, to race,” Russian dialectal брукать (brukát’) (< Proto-Slavic*brukati) “to throw, to hurl, to kick; to smear.” From a variant stem *bʰreuḱ- also Proto-Slavic*brusiti (Russian dialectal брусить (brusítʼ) “to gather leaves for animals (to eat)”, from “to pluck, to pull,” Bulgarianбруся (brúsja, “to hit, to pluck (plants)”), Czechbrousiti (“to sharpen, to hone, to grind; to run”), Polishbrusić (“to sharpen with a whetstone, to grind”)).