It flows in a wide estuary (3)

I believe the answer is:

dee

I'm a little stuck... Click here to teach me more about this clue!

'it flows' is the definition.
The definition suggests a singular noun which matches the answer.

'in a wide estuary' is the wordplay.
'in' indicates a hidden word.
'DEE' can be found hidden inside 'wide estuary'.

Can you help me to learn more?

(Other definitions for dee that I've seen before include "Balmoral's river" , "Aberdeen's river" , "Scottish river" , "Name of many rivers" , "River name" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.