wizzo
n.β Β«Lt. Col. Mark Buccigrossiβs the back-seat wizzoβvernacular for the acronym WSO, or weapons system officer/navigatorβin the F-4 Phantom.Β» ββAmerican F-4s future is mothballed” by Michael Shinabery Alamogordo News (N.M.) Dec. 16, 2004. (source: Double-Tongued Dictionary)