Sticking point? (6)

I think it could be either:

Which length description are you looking for?:

dagger

'sticking point?' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for dagger that I've seen before include "Stabbing weapon" , "The weapon Macbeth thought he saw" , "Hand weapon" , "A weapon; a reference mark" , "'Short, double-edged blade (6)'" .)

I've seen this clue in The Sun.

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