The Collaborative International Dictionary of English v.0.48:

Hackney \Hack"ney\, v. t. [imp. & p. p. Hackneyed (-n[i^]d);
   p. pr. & vb. n. Hackneying.]
   1. To devote to common or frequent use, as a horse or
      carriage; to wear out in common service; to make trite or
      commonplace; as, a hackneyed metaphor or quotation.
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            Had I so lavish of my presence been,
            So common-hackneyed in the eyes of men. --Shak.
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   2. To carry in a hackney coach. --Cowper.
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