hell-bent for leather
Moving recklessly fast, as in Out the door she went, hell-bent for leather. The use of hell-bent in the sense of “recklessly determined” dates from the first half of the 1800s. Leather alludes to a horse's saddle and to riding on horseback; this colloquial expression may be an American version of the earlier British army jargon hell for leather, first recorded in 1889.
Words nearby hell-bent for leather
hell to pay,
hell week,
hell's angel,
hell's bells,
hell's kitchen,
hell-bent for leather,
hell-fired,
hell-for-leather,
hell-raiser,
hella,
hellacious