estuary
noun/ˈestʃuəri/
/ˈestʃueri/
(plural estuaries)
- the wide part of a river where it flows into the sea
- the Thames estuary
Word Originmid 16th cent. (denoting a tidal inlet of any size): from Latin aestuarium ‘tidal part of a shore’, from aestus ‘tide’.Definitions on the go
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estuary