E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Adams Profession.
Gardening, agriculture. Adam was appointed by God to dress the garden of Eden, and to keep it (Gen. ii. 15); and after the fall he was sent out of the garden to till the ground (Gen. iii. 23).
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There is no ancient gentlemen, but gardeners, ditchers, and grave-makers; they hold up Adams profession.The Clown in Hamlet, v. 1.