riverbed

American  

[riv-er-bed] / ˈrɪv ərˌbɛd /

noun

1. the channel in which a river flows or formerly flowed.

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Etymology

Origin of riverbed

First recorded in 1825–35; river ¹ + bed

Example Sentences

NASA's Perseverance rover has collected samples from Jezero Crater, an ancient Martian riverbed, and they may contain evidence of very early life.

From Science Daily

The Eisbach wave on a side branch of the Isar River had been a landmark in the Bavarian city since the 1980s but it vanished in October after annual cleanup work along the riverbed.

From Barron's

“It’s the size of a lake but it’s not deep. ... It’s more like a very, very large riverbed without the flow — a wading pool maybe.”

From Los Angeles Times

Mining sites pop up wherever local people find deposits in this land laden with riches - on farmland, in former graveyards and along riverbeds.

From BBC

Rias, riverbeds that have been flooded by the sea, form deep harbors that reach inland, creating channels that can funnel waves.

From Literature