adv. Up to the knuckles; with the whole hand in; hence fig., deeply, ‘up to the hilt.’

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1589.  Pappe w. Hatchet (1844), 41. Haue with thee knuckle deepe, it shall neuer bee said that I dare not venter mine eares where Martin hazards his necke.

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1629.  Massinger, Picture, III. i. Methinks I am already Knuckle-deep in the flesh-pots.

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1765.  Cowper, Lett. to J. Hill, Wks. 1837, XV. 4. I dare say you were knuckle-deep in contrabands.

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1829.  Scott, Anne of G., xiii. Shall we … be knuckle-deep in the English budgets.

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