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Letter bound to have shown sympathy (6)

Ross
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'letter bound' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I cannot understand how the rest of the clue works.

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(Other definitions for poland that I've seen before include "Country joining the European Union in 2004" , "Wroclaw's country" , "in E" , "EU member" , "Its capital is Warsaw" .)

I've seen this clue in The Globe and Mail.
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