Delight in archaeological excavation (3)

I believe the answer is:

dig

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'archaeological excavation' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

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(Other definitions for dig that I've seen before include "Briefly, an archaeological excavation" , "Sharp poke" , "Excavate - enjoy" , "Jibe" , "Maybe break new ground" .)

I've seen this clue in The Times.

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