Definition of nazis:
(n) :
(historical) A member of the Nazi Party (the National Socialist German Workers' Party or NSDAP).
(adj) :
(historical) Of or pertaining to the Nazi Party specifically, or to Nazism, neo-Nazism, or neo-Nazis more generally.
(adj) :
(historical) Of or pertaining to the Third Reich.
(n) :
(colloquial) One who advocates neo-Nazism, or a similarly fascist, racist, anti-Semitic, xenophobic, ethnic supremacist, or ultranationalist ideology; a neo-Nazi.
(n) :
(slang, usually derogatory, sometimes offensive, see usage notes below) One who imposes their views on others; one who is unfairly oppressive or needlessly strict. (also frequently uncapitalised: nazi)
(adj) :
(by extension) Domineering, totalitarian, or intolerant.