Ratchet means "rat shit ghetto." This term originated amongst many Deep South rappers - namely a song by Lil Boosie called "Do Tha Ratchet"on a 2006 album called "United We Stand, Divided We Fall," but had been in other Boosie mixtapes.
Ratchet refers to generally being from the ghetto.
A term used by young engineers to call their Superintendents
Engineer: Man, you ratchet.
Super: I don't even know what that means.
1) An uncommon or useless tool or item (usually scattered in a garage)
2) A character from the game "Ratchet and Clank"
3) Someone who us being used by another person
1) "I have way too many ratchets in my garage"
2) "I can't wait for the new Ratchet and Clank game!"
3) "Wow, Chell is treating Nicole like a ratchet"
Gorgeous. the most prettiest thing u have ever seen. this only works when describing Laine Seabern
Laine looks hella ratchet today
Tight. Hard-core. Wicked Awesome.
"Dude, you see that kid fighting? Kid is Ratchet."
"You think Superman is cool? Fucking Zod is RATCHET."