hack(redirected from hacking off)
Also found in: Dictionary, Thesaurus, Legal, Idioms, Encyclopedia.
1. a recognized style of horse and not a breed. Not to be confused with Hackney, the breed of harness horses. Mostly Thoroughbreds, sometimes with some Arab or Quarter horse blood. Any color, usually 14.2 to 15.2 hands high, may be lightweight or heavyweight.
2. to go for a ride.