a navigable body of water
"The old canal was restored as a bustling waterway where small boats can now sail freely between the cities."
a conduit through which water flows
"The old mill was built along the narrow waterway where the river used to flow before being diverted by the dam."
A body of water, such as a river, channel or canal, that is navigable.
"The old map highlighted several narrow canals and rivers as key waterways for transporting goods through the city."