Admission of vampire, Lance? (6)

I believe the answer is:

impale

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

I cannot understand how the remainder of the clue works.

(Other definitions for impale that I've seen before include "spit!" , "Run through with stake" , "Pierce through as with sharp stick" , "Pierce with a stick (as Vlad did?)" , "Transfix with spear" .)

I've seen this clue in the Sydney Morning Herald.

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