Meaning & use
estuary
A coastal area where a river's freshwater meets and mixes with the sea's saltwater.
See it in a sentence
Migrating birds gather in the estuary each autumn to feed before flying south.
The estuary's brackish water supports a rich mix of fish and shellfish species.
A note on using this word
Estuaries are ecologically important nursery habitats for many marine species and are often protected wetland areas.
Words with a similar meaning
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