Having lots of money - from a poker hand? (5)

I believe the answer is:

flush

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'poker hand?' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

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(Other definitions for flush that I've seen before include "Cleanse by running water" , "Redden; level" , "Look ashamed < , maybe even promising hand" , "Rush of blood" , "winning hand at poker" .)

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

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