Definitions
1.nounA member of the National Socialist German Workers Party (Nationalsozialistische Deutsche Arbeiterpartei, commonly called the NSDAP or Nazi Party).
2.nounOne who subscribes to or advocates (neo-)Nazism or a similarly fascist, racist (especially anti-Semitic), xenophobic, ethnic supremacist, or ultranationalist ideology; a neo-Nazi.
3.noun(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)"She’s a total grammar Nazi."
4.nounA German, a person of German descent, or a person perceived to be of German descent.