HACK (5)

Hack (hăk), n. [[Shortened fr. hackney. See Hackney.]] 1. 1. A horse, hackneyed or let out for common hire; also, a horse used in all kinds of work, or a saddle horse, as distinguished from hunting and carriage horses.
2. 2. A coach or carriage let for hire; particularly, a coach with two seats inside facing each other; a hackney coach.
On horse, on foot, in hacks and gilded chariots. Pope. 3. 3. A bookmaker who hires himself out for any sort of literary work; an overworked man; a drudge.
Here lies poor Ned Purdon, from misery freed, Who long was a bookseller's hack. Goldsmith. 4. 4. A procuress.