Webster’s Revised Unabridged Dictionary · 1913
Hackney
Hack′ney (-ny̆), n.; pl. Hackneys (-nĭz). [OE. hakeney, hakenay; cf. F. haquenée a pacing horse, an ambling nag, OF. also haguenée, Sp. hacanea, OSp. facanea, D. hakkenei, also OF. haque horse, Sp. haca, OSp. faca; perh. akin to E. hack to cut, and nag, and orig. meaning, a jolting horse. Cf. Hack a horse, Nag.] 1. A horse for riding or driving; a nag; a pony. Chaucer.
2. A horse or pony kept for hire.
3. A carriage kept for hire; a hack; a hackney coach.
4. A hired drudge; a hireling; a prostitute.
Hack′ney, a. Let out for hire; devoted to common use; hence, much used; trite; mean; as, hackney coaches; hackney authors. "Hackney tongue." Roscommon.
Hack′ney, v. t. [imp. & p. p. Hackneyed (-nĭd); 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.
Had I so lavish of my presence been, So common-hackneyed in the eyes of men. Shak.
2. To carry in a hackney coach. Cowper.