noun
- the killing of a king.
- a person who kills a king or is responsible for his death, especially one of the judges who condemned Charles I of England to death.
noun
- the killing of a king
- a person who kills a king
1540s, “man who kills a king,” formed from Latin rex (genitive regis) “king” (see regal) on model of suicide. Meaning “crime of killing a king” is from c.1600.