welter (v.) Look up welter at Dictionary.com
"to roll or twist," early 14c., from Middle Dutch or Middle Low German welteren "to roll," from Proto-Germanic *waltijan (cognates: Old English wieltan, Old Norse velta, Old High German walzan "to turn, revolve," German wälzen "to roll," Gothic waltjan "to roll"), from PIE root *wel- (3) "to turn, revolve" (see volvox). Related: Weltered; weltering.
welter (n.) Look up welter at Dictionary.com
1590s, "confusion," from welter (v.). The meaning "confused mass" is first recorded 1851.