WordWeb Online

1. A boy or man
   "that boyo is your host";
   - chap, fellow, feller, fella, lad, gent, blighter, cuss, bloke [Brit], bucko
    
2. A male child (a familiar term of address to a boy)
   - cub, lad, laddie [UK], sonny, sonny boy, son

Derived forms: boyos

Type of: boy, male, male child, male person

Encyclopedia: Boyo