U.S. [f. FLUNK v. or sb. + -Y.]. One who ‘flunks’ or ‘comes to grief’; in College slang, one who fails in an examination: in Stock Exchange language, an ignorant person who dabbles in financial speculation.

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1841.  F. Jackson, A Week in Wall Street, 90–1. He [a broker who had met with heavy losses] muttered to himself ‘I’m in a bear-trap—this won’t do. The dogs will ‘come over’ me. I shall be mulct in a loss. But I’ve got time—I’ll turn the scale, I’ll help the bulls, operate for a rise, and draw in the flunkies.’

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1855.  Yale Lit. Mag. (Farmer), Nov., XX. 76, ‘The College Ghost.’

        The ungrateful wretch has cast me
  Forth to wander in the gloom.
I bore him safe through Horace,
  Saved him from the flunkey’s doom.

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