Crossword Genius

A cot for a renegade (8)

Ross

I believe the answer is:

turncoat

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'for a renegade' is the definition.
(synonyms)

I cannot understand how the remainder of the clue works.

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(Other definitions for turncoat that I've seen before include "'Renegade, traitor (8)'" , "Deserter to opposition" , "Traitor with inverted garment" , "Traitor with reversed garment" , "Traitor, defector" .)

I've seen this clue in The Irish Independent.
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