1º_ As an adjective is "who loses the chaveta (rivet, pin)", figuratively is who loses control of his acts. See deranged . 2º_ Participle of the verb deschavetar .
In Colombia it means crazy, crazy, deciquily. He's lost his mind. You've lost your mind. Unscoisted.
DESCHAVETADO: CRAZY, NUTTY.SHE HAS LOST THE JUDGMENT, SANITY.