Not a miserly poet (7)

I believe the answer is:

spender

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'poet' is the definition.
(Stephen Spender)

I don't understand the rest of the clue.

(Other definitions for spender that I've seen before include "poet, communist" , "One using money" , "patronising retailers, perhaps?" , "Sir Stephen -, English twentieth century poet" , "Profligate" .)

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

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