Sewer scurrier (3)

I believe the answer is:

rat

'sewer scurrier' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for rat that I've seen before include "Desert - rodent" , "Treacherous rodent" , "shopper" , "Despicable person" , "Destructive rodent" .)

I've seen this clue in the USA Today, the LA Times and The New York Times.

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