Like a siren copper turned up, entering drug cutting area (9)

I believe the answer is:

seductive

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'like a siren' is the definition.
(sirens are seductive creatures)

I can't explain the remainder of the clue.

(Other definitions for seductive that I've seen before include "tempting" , "Alluring" , "Enticing" .)

I've seen this clue in The Guardian.

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