Verb

Middle English welteren, weltryn "to turn over, tumble, writhe, take unrestrained pleasure (in)," frequentative derivative of welten "to topple, overturn, fall over," by-form (perhaps from a Germanic weak verb *waltjan-) of walten "to turn over, upend, be overturned, cast, throw, surge," going back to Old English -wæltan (in gewæltan "to roll"), going back to a Germanic verbal base *walt-, *welt- "roll," found in a variety of attested formations (as Old English awyltan "to roll away," unwealt "steady," Middle High German walzen "to roll over," Old Icelandic velta [strong verb, intransitive] "to roll, roll over," velta [transitive] "to set rolling," Gothic waltjan "to surge against [of waves]," uswaltjan "to overturn"), going back to Indo-European *u̯el-d-, extended form of *u̯el(H)- "roll," whence, with various vowel grades and stem formations, Old Irish fillid "(s/he) bends, turns back" (< *u̯el-n-), Old Church Slavic valiti sę "to roll (intransitive)," Lithuanian veliù, vélti "to full (cloth), roll," Greek eiléō, eileîn "wind, turn round, roll up" (< *u̯el-né-), íllō, íllein in same sense (< *u̯i-u̯l-ō), Armenian glem "to roll"

Noun (1)

derivative of welter entry 1

Noun (2)

by shortening