Crossword Genius

Cold-blooded killer

Ross

I believe the answer is:

asp

'cold-blooded killer' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for asp that I've seen before include "Kind of snake - what a sap" , "Small poisonous snake" , "Cold-blooded killer" , "Pa's Cleopatra's killer" , "something at the zoo" .)

I've seen this clue in The New York Times.
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