Crossword Genius

Reporter's crude language causes concern (6)

Ross

I believe the answer is:

pigeon

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'concern' is the definition.
(as in the phrase 'not my pigeon')

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for pigeon that I've seen before include "Dupe" , "Racing bird of town and wood" , "Bird of the dove family" , "gull" , "run, perhaps" .)

I've seen this clue in The Independent.
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