Somewhere near Dover (6)

I believe the answer is:

calais

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'somewhere near dover' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for calais that I've seen before include "French Channel port" , "end of the tunnel" , "Mary Tudor said it would be found "lying in my heart"" , "A ferry port in northern France" , "French port for ferry to England" .)

I've seen this clue in the Evening Standard.

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