The story
- Proto-Germanic · derived from*walmiz
- Proto-West Germanic · derived from*walmi
- Old English · derived fromwælm
- Middle English · inherited fromwalmen“to surge, bubble forth, pour forth”
- English todaywalm
From Middle English walmen (“to surge, bubble forth, pour forth”), from walm, walme (“a gush, surge”), from Old English wælm, welm, wylm, wielm, wilm (“that which wells, a fount, stream, spring, source, surge”), from Proto-West Germanic *walmi, *walmu, from Proto-Germanic *walmiz, *walmuz.
Etymology from Wiktionary, CC BY-SA 4.0.