n.; pl. Hackneys [ OE. hakeney, hakenay; cf. F. haguenée a pacing horse, an ambling nag, OF. also haquenée, 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. [ 1913 Webster ]
2. A horse or pony kept for hire. [ 1913 Webster ]
3. A carriage kept for hire; a hack; a hackney coach. [ 1913 Webster ]
4. A hired drudge; a hireling; a prostitute. [ 1913 Webster ]