a member of the National Socialist German Workers' party of Germany, which in 1933, under Adolf Hitler, seized political control of the country, suppressing all opposition and establishing a dictatorship over all cultural, economic, and political activities of the people, and promulgated belief in the supremacy of Hitler as Führer, aggressive anti-Semitism, the natural supremacy of the German people, and the establishment of Germany by superior force as a dominant world power. The party was officially abolished in 1945 at the conclusion of World War II.

( often lowercase ) a person elsewhere who holds similar views.

Sometimes Offensive . ( often lowercase ) a person who is fanatically dedicated to or seeks to control a specified activity, practice, etc.

a jazz nazi who disdains other forms of music; tobacco nazis trying to ban smoking.

of or pertaining to the Nazis.