wizzo n. among military aircraft personnel, a weapons systems operator. Etymological Note: Pronunciation of the first letters of weapons systems operator or officer. (source: Double-Tongued Dictionary)
wizzo n.— «A skilled “Wizzo”—weapons-systems operator—can achieve good accuracy with only one aiming device, but the planners established the “double lock” rule to make sure the right targets were hit...
wizzo n.— «His “wizzo” weapons system officer, Maj. Billy Wilhite, 36, of Monroe, La., said, “Nobody has ever shot at us before.”» —“Combat beginner says strike awesome” Tulsa Tribune (Okla...
wizzo n.— «Lt. Col. Mark Buccigrossi’s the back-seat wizzo—vernacular for the acronym WSO, or weapons system officer/navigator—in the F-4 Phantom.» —“American F-4s future is mothballed” by Michael Shinabery Alamogordo...