noun any member of a subcultural urban adolescent group that dresses and acts older than their years. Variants are 'chava', 'charva', 'chavster' and 'charver'. Usually derogatory, even contemptuous; possibly derived from an abbreviation of Chatham, the town in Kent where the genus is reputed to have originated; possibly from, or influenced by, Romany chavvy (a child) UK, 2003