waterstream

The story

1. Proto-West Germanic · inherited from*watarstraum
2. Old English · inherited fromwæterstrēam
3. Middle English · inherited fromwater streme
4. English todaywaterstream

From Middle English water streme, from Old English wæterstrēam, from Proto-West Germanic *watarstraum, equivalent to water + stream. Cognate with West Frisian wetterstream, Dutch waterstroom, German Wasserstrom.