Push excavator, abruptly? (5)

I believe the answer is:

shove

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'push' is the definition.
(I know that shove is a more specific form of push)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for shove that I've seen before include "Push roughly" , "Jostle" , "Push in a rude manner" , "Barge" , "- - -halfpenny (pub game)" .)

I've seen this clue in The Irish Times.

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