Englishfor English speakers
closed
Adjective
—
Not open.
The store is closed on the weekends.
—
Not available to the public.
I used a closed source to write the article.
conduit
—
noun
a passage (a pipe or tunnel) through which water or electric wires can pass
the computers were connected through a system of conduits
waterway
—
noun
a navigable body of water
—
noun
(= watercourse)
a conduit through which water flows