http://www.msnbc.msn.com/id/8171853 LONDON - Chavs, yarcos and neds â these are the new tribes of Britain, as defined by compilers of the latest edition of the Collins English Dictionary. And the weapon for keeping them in line? The asbo, of course. âChavâ is defined as âa young working-class person who dresses in casual sports clothes. The wordâs origins may come âfrom Romany chavi â a child.â The dictionary also includes âchavette,â the female equivalent, and the adjectives âchavishâ and âchavtasticâ â suitable for or designed for chavs. No mention of the burberry knockoffs though!