A boor, the swine! (3)

I believe the answer is:

hog

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'swine' is the definition.
(hog is a kind of swine)

I don't understand the remainder of the clue.

(Other definitions for hog that I've seen before include "Greedy person or pig for slaughter" , "A male pig or a greedy person" , "Pig; hoard selfishly" , "Porker" , "Selfish type" .)

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

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