1. a wrench
2. the main character from the Insomniac video game series, "Ratchet And Clank"
3. a musical instrument that makes a scraping noise
2. DARN IT RATCHET, JUST KILL THAT ROBOT!
3. This ratchet is so noisy!
Urgh. I drank too much last night. I feel ratchet.
2) (corruption of "wretched"), derogatory hip-hop slang for an unpopular, obese, average-looking, rude, closet poly, hip-hop person, usually a welfare client with children from multiple parents, substance abuse problems and a narcissistic personality disorder, hence the multiple partners and nightclub brawling. Often wears ill-fitting leggings, torn fishnet hose and a loose, matted hair weave in a bright color. Extra income may come from multiple partners, begging and/or prostitution, due to hir poverty. Term is often hypocritically used by similar speakers. Warning! This term is a racial stereotype, sexist fat and slut-shaming speech and may provoke ethnic violence from target.
3) hip-hop slang for gun, knife, or assaulting someone. See meanings 1 and 2.
4) Science fiction video game character from "Ratchet & Clank" series
5) Science fiction robot character from "Transformers" animated series.
2) "That person is soooo ratchet, in that bad weave and tore-up stockings!"
3) "Let's ratchet that mutha#@%$," he said and pulled a 9-mm. ratchet on him.