or doo·zie(dū'zē) n.Slang, pl., -zies. Something extraordinary or bizarre: "Among the delicious names taken by, or given to, minor political parties in the United States . . . are these doozies: Quids, Locofocos, Barnburners, Coodies, Hunkies, Bucktails" (Saturday Review).
[Possibly blend of DAISY and Duesenberg, a luxury car of the late 1920s and 1930s.]