hack·ney 
(hăknē)
(hăknē)n. pl. hack·neys
1. often Hackney A horse of a breed developed in England, having a gait characterized by pronounced flexion of the knee.
2. A trotting horse suited for routine riding or driving; a hack.
3. A coach or carriage for hire.
tr.v. hack·neyed, hack·ney·ing, hack·neys
1. To cause to become banal and trite through overuse.
2. To hire out; let.
adj.
1. Banal; trite.
2. Having been hired.
[Middle English hakenei, probably after Hakenei, Hackney, a borough of London, England, where such horses were raised.]