köken: Inherited from Vulgar Latin *voltoria < *volutoria, from Latin volutus, from volvō (“roll, tumble”). Compare Aromanian vãltoari. Alternatively perhaps linked to the related root *volutulāre (cf. Italian voltolare).
köken: Of debated origin: # Borrowed from a Chuvash-type Turkic language before the times of the Hungarian conquest of the Carpathian Basin (at the turn of the 9th and 10th centuries). # From the verb őr (“to turn”) + -vény.
Possibly a reduplicated form of Proto-Indo-European *gʷerh₃- (“to devour”) (whence also vorō), though the sound change is questionable and the morphology is unclear. Compare Sanskrit गर्गर (gargara, “whirlpool, eddy; water-jar; subterranean drain”), Ancient Greek γόργυρα (górgura, “underground drain; water-pot; trough”), Proto-Celtic *brāgants (“neck; throat”) and English craw.