Meaning

noun a navigable body of water

noun a conduit through which water flows

originFrom Middle English waterwey, from Old English wæterweġ (“waterway”), from Proto-West Germanic *watarweg, equivalent to water + way. Compare Saterland Frisian Woaterwai (“waterway”), West Frisian wetterwei (“waterway”), Dutch waterweg (“waterway”), German Wasserweg (“waterway”), Danish vandvej (“waterway”), Swedish vattenväg (“waterway”).

Etymology from Wiktionary, CC BY-SA 3.0