2. A leader who is an insane monster who causes so much misery and suffering in the world.
2. Denigrating epithet used to compare the addressed to Adolf Hitler
3. Everyday German word meaning "guide" or "leader".
The Führer died in 1945
Teacher: Cheating will be mercylessly punished!
Pupil: Yes, mein Führer!
3. Ich möchte einen Reiseführer kaufen. (I want to buy a tourist guide.)