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A ghetto-dialect mispronunciation of the English term "wretched".
"Ol' girl with her hoochie-ass clothes too tight an' her tracks shown' in her scraggly-ass weave with her fake-ass Gucci bag think she cute. She ratchet."
by Big Booty D April 27, 2014
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a galactic space lombax that has saved over 50 galaxies along with a robot named Clank.
Gamer 1: Ratchet is one of the universe's greatest heroes that has been known by all kinds of alien races!

Gamer 2: But didn't Clank also help him?

Gamer 1: Yeah, he met him while fixing his ship.
by SuperDooperPooperScooper November 13, 2013
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It's a fucking socket wrench.
The correct way to use the word "ratchet" would be, "Wow, this ratchet is so useful."
"Damn, she so ratchet-"
"Shut the fuck up, it's a socket wrench."
by Mr. Yell-O September 04, 2012
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1) A ratchet is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Though something of a misnomer, "ratchet" is also often used to refer to ratcheting socket wrenches, a common tool with a ratcheting handle.

2) A character in the Transformers franchise. (Seriously?)
1) There is a ratchet in that clock. That means that the clock can't turn the opposite direction...

2) Ratchet can turn into an ambulance at will.
by Anon255 February 08, 2013
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1. A type of wrench used to crank down or unscrew nuts and bolts.

2. The word "wretched" as spelled and pronounced by the uneducated.
1: That girl is hella ratchet!..

2: No. You mean to say she's "wretched". Ratchet is a type of wrench. Another acceptable word you could've used is "skanky" or "whorish."
by Jon Solo March 08, 2014
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1. A type of tool
2. A female "wannabe"
3. A person (usually female) who thinks she is cool, but she is not.
4. A derogatory term to describe a female who thinks she is young, thin, fashionable, or intelligent but who is not.
Origin: An ebonic vernacular term coined from the word "wretched." Origin: Made popular by rapper Lil' Boosie in his song "Ratchet" whose subject is the poor and wretched. The term has been picked up by the mainstream teenage culture.
"She thinks her clothes make her hot, but she's ratchet."
"Mom, dating that guy my age is just ratchet." e.g. from "Girlfriends' Guide to Divorce"
"Look at that ratchet with the bad hairdo and torn fishnets sucking up to the guy in the Porsche. That's just ratchet."
by Voyajer 17 February 15, 2017
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