Crossword Genius

Cat given water in French vineyard? (7)

Ross

I believe the answer is:

chateau

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

'vineyard?' is the definition.
(I've seen this before)

'cat given water in french' is the wordplay.
'cat given' becomes 'chat' (I can't justify this - if you can you should believe this answer much more).
'water in french' becomes 'eau' (I've seen this in another clue).
'chat'+'eau'='CHATEAU'

Can you help me to learn more?

(Other definitions for chateau that I've seen before include "French wine producer" , "Loire Valley attraction" , "Large country house in France" , "A grand French Mansion" , "French county house" .)

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