Crossword Genius

Estuary language (5)

Ross

I believe the answer is:

creek

I believe this is a double definition.

'estuary' is the first definition.
(thesaurus)

'language' is the second definition.
(Creek is an example)

(Other definitions for creek that I've seen before include "Rivulet" , "Small stream in the US" , "Cove" , "Small water course" , "Narrow bay" .)

I've seen this clue in The Times.
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