beast of burden bidet buck carriage horse cart horse cavalry horse draft horse dray horse driving horse drudge fag fill horse filler galley slave gigster greasy grind grind grub hack hackney horse hunter jument lead leader mount pack horse palfrey peon plodder plow horse pole horse polo pony post-horse remount rider riding horse road horse roadster rouncy saddle horse saddler sawbuck shaft horse slave slavey slogger stalking-horse sumpter sumpter horse swot thill horse thiller toiler trestle wheeler wheelhorse