A member of the National Socialist German Workers Party (Nationalsozialistische Deutsche Arbeiterpartei, commonly called the NSDAP or Nazi Party).
One who subscribes to or advocates (neo-)Nazism or a similarly fascist, racist (especially anti-Semitic), xenophobic, ethnic supremacist, or ultranationalist ideology; a neo-Nazi.
(usually derogatory, sometimes offensive, see usage notes below) One who imposes one’s views on others; one who is considered unfairly oppressive or needlessly strict. (also frequently uncapitalised: nazi)
A German, a person of German descent, or a person perceived to be of German descent.
Of or pertaining to the Nazi Party (NSDAP) specifically, or to Nazism, neo-Nazism or neo-Nazis more generally.
(by extension) Domineering, totalitarian, or intolerant.