An imperial unit of power. 1 Hp = 746 W
It would take a car travelling up a 3.2 degree slope with drag coefficient .33 and cross sectional area 2.5m^2 44 Horsepower to go 100km/h. Excluding friction.
by volga11 November 06, 2008
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Horsepower is directly related to torque. With a low torque output, you will have a low horsepower output. Torque will start higher in the low RPM's but will always cross with horsepower at 5252.

Horsepower = (Torque x RPM) / 5252

Check out that car, it has so much horsepower.

No. It has a lot of torque.
by T-I.net June 13, 2007
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A thick ass and legs. A reference to "bottom end power". Usually used in reference to a girl who is not fat, but has a bigger ass and thighs. Can be good or bad, depending on the user's preference for a thicker ass and thighs.
Damn, that bitch has some horsepower! Mmmm Mmmm!

or

Her face is hella pretty and she's got some nice abs, but she's runnin' too much horsepower for my taste.
by leminyelloblak December 27, 2010
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The number of milligrams (mg) of caffeine in a coffee/energy drink etc.
You shouldn’t drink Bang Energy. 300 horsepower is too much!

I didn’t know a Starbucks latte had 150 horsepower!
by Egill Skallagrimson February 05, 2020
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Any large, hillclimb that requires skill and brute hosrepower to successfully negotiate.
We went to Dove Springs and saw many riders attempting to climb Horsepower Hill.

Just about every motorcycle riding area has its own 'horsepower hill'.
by mreverting September 08, 2007
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When you personally have made a repair to a machine and feel that it works better just because you worked on it. Even if the part of the machine you worked on would not make it work any better.
Jim: "I replaced the heater core in my car, now it seems faster..."
Sam: "I've heard of that before."
Jim: "Seems to run smoother too!?"
Sam: "That's Mental Horsepower!"
by MNIGHT August 21, 2009
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Mental horsepower refers to intelligence in the purest sense of cognitive ability and memory.
Those with high MH have the ability to learn math and science easily and trivially.
by mathistheonlytruth February 02, 2017
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