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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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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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: n. type of socket wrench

: adj. a horrific mispronunciation of "wretched"

This mispronunciation has taken on the meaning of severely ghetto and stupid, esp. when used on a girl/woman
"I love this ratchet! It's so helpful!"

"Dang, that chick is ratchet!!"

Note: Mistakes like this can warp our language...so be careful!!! o.0
by EmCEminemz January 19, 2013
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One of the most epic Transformers, he is yellow-ish and pretty much the brains of Optimus Prime's group.
Optimus Prime: Our medical officer: Ratchet.
Ratchet: The boy's pheromone levels suggest he wants to mate with the female.
by TransformersChick July 26, 2009
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A ghetto girl who is loud and obnoxious and constantly causing drama and usually trashy.
A ratchet girl would wear a sweat suit and talk like this: " o hell naw i know that bitch was not talking to my man I finna beat her ass, ooo she is so fake."
by real things April 09, 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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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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