noun
riverbed
RIHV-uh-behd
noun
1
The channel of ground over which a river flows, or once flowed.
"By late summer the riverbed was completely dry."
How to Use Riverbed
Learner’s notesIn plain EnglishThe ground a river runs over — the bottom, not the banks.
Word Forms
riverbeds plural
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By late summer the _____ was completely dry.
Etymology
A compound of "river" and "bed," paralleling similar compounds in Dutch, German, and Swedish.