Nixie \nix-xie\ as a girl's name is of Old German origin, and the meaning of Nixie is "water sprite". Usually beautiful, and unlike pixies, nixies are belligerent toward men.
For more information, see also the related name Bernice.
Baby names that sound like Nixie are Nixe and Nix. Other similar baby names are Dixie, Lexie, Dixee, Doxie, Maxie, Nikia, Niki, Nike, Nikkie, Nickie and Roxie.