Stunner posed again looking northward (5)

I believe the answer is:

taser

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'stunner' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for taser that I've seen before include "Police stun weapon" , "A temporary stunner?" , "Weapon used to deliver a temporarily paralysing electric shock" , "Stunning weapon" , "Electroshock weapon" .)

I've seen this clue in The Sun.

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