What does a dream about a guillotine mean?
A dream about a guillotine symbolizes anger, hostility and the outburst of some strong emotions. You are not using your head and your ratio enough before you judge. You need to think things through more before you act.
What does a dream mean in which your neck is severed in a guillotine?
A dream in which your neck is severed, chopped off, or cut with a guillotine means that your voice is not being heard or your opinion is not coming across well.
See also the dream meaning of neck