Wiktionary
n. A place where reeds grow.
Wikipedia
Reed beds are natural habitats found in floodplains, waterlogged depressions and estuaries. Reed beds are part of a succession from young reed colonising open water or wet ground through a gradation of increasingly dry ground. As reed beds age, they build up a considerable litter layer which eventually rises above the water level, and ultimately provides opportunities for scrub or woodland invasion. Artificial reed beds are used as a method of removing pollutants from grey water.
Usage examples of "reed bed".
These prairie reunions were tender and even passionate, and Clay Basket would have a tipi ready with the kind of furnishings she knew Pasquinel liked: a willow-reed bed with backrests, buffalo robes on the floor, a reliable flap for emitting smoke.
He held the rifle by the grip with the barrels tilted up over his shoulder and his thumb on the slide of the safety catch, watching the old lioness out there on the edge of the reed bed as she crawled toward them on her belly.
The reed bed where she'd touched water should be on her right, not far away.
By then the sturdy little riverboat was safely nestled in the reed bed and all her crew, except Yanados, were awake.
But it was not a reed bed, but rather a hollow in some large, rounded bushes, with laurellike, dark green leaves.
Peasimy tiptoes along to the Riverbank, out onto the jetty, down to the place the reed bed thins out and the fish sing, flings himself down with his head snaking out over the slosh and slurp of the black water.
On the display's next scenario, the blue line cut across a reed bed that Johnnie didn't think was a channel.