hackney
/ˈhæknɪ/noun
(pl. -eys)
1- historical a horse or pony of a light breed with a high-stepping trot, used in harness〈史〉海克尼马（一种轻型、善小步快跑的马, 用于拉车）。
1.1
- usu. as modifier a horse-drawn vehicle kept for hire出租马车：
a hackney coach.
一辆出租马车。
词源
Middle English: probably from Hackney in East London， where horses were pastured. The term originally denoted an ordinary riding horse (as opposed to a war horse or draught horse)， especially one available for hire: hence hackney carriage or coach, and the verb hackney meaning 'use (a horse) for general purposes'， later 'make commonplace by overuse' （see HACKNEYED）.