Crossword Genius

Having one, is a player red-handed? (5)

Ross

I believe the answer is:

flush

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'red-handed?' is the definition.
Both the definition and answer are adjectives.
Perhaps you can see a link between them that I don't see?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for flush that I've seen before include "winning hand at poker" , "Become red and hot" , "Rush of blood" , "Look ashamed < , maybe even promising hand" , "Pull the chain - rush of emotion - good poker hand - having plenty of money" .)

I've seen this clue in the Evening Standard.
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