What does "streambed" mean?

A channel through which a stream flows or used to flow.

What is a synonym for "streambed"?

Common synonyms include: arroyos, channel bottom, creek bed, gullies, river bed, riverbed.

noun

noun ·Rare ·Advanced level

Noun

1
A channel through which a stream flows or used to flow.
"Near-synonyms: riverbed, creekbed"
2
a channel occupied (or formerly occupied) by a stream wordnet

"Nasa's Mars rover has found an ancient streambed."

From stream + bed. Compare Dutch stroombed (“channel, streambed”), German Strombett (“channel”), Swedish strömbädd (“gully, ditch”).