zambuk /ˈzæmbʌk/ noun1 •(Australia, informal) A first-aider, especially one from St. John Ambulance attending at a sports event.When I came past the accident scene I couldn't believe it—the driver was walking around, though he was breathing a little huskily. As the ambulance by that time had arrived I told one of the zambucks. — 2005 formsZambuks · zambuks