A way to kiss Gregory? (4)

I believe the answer is:

peck

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

I don't understand how the remainder of the clue works.

(Other definitions for peck that I've seen before include "Nibble" , "Large number" , "Kiss; part of bushel" , "Perfunctory kiss" , "Eat just a bit" .)

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

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