sund (Old English) comes from Old Norse sund, from Proto-Germanic sundą, from Proto-Germanic swimmaną, from Proto-Indo-European swem(bʰ)- — to bend, turn, swing; to be unsteady, move, swim.
sund (Old English): swimming; sea, water
Definitions
swimming; sea, water
Ancestry of “sund”, step by step
sund traces back through two separate lines of ancestry.