Crossword Genius

China river? (5)

Ross

I believe the answer is:

plate

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This clue might be a double definition.

'china' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'river?' is the second definition.
The definition and answer can be both natural objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

Can you help me to learn more?

(Other definitions for plate that I've seen before include "Coat with metal" , "Denture" , "Helping of food" , "This glass is thick as for shop window" , "serve" .)

I've seen this clue in the Evening Standard.
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