- one who kills, or is responsible for the killing of, a monarch, esp. of one's own country
Origin of regicideML regicidum the killing of a monarch
Origin of regicideMedieval Latin regicida ; from Classical Latin rex (gen. regis), a king (see right) + -cida (see -cide)
- The killing of a king.
- One who kills a king.
Origin of regicideLatin r&emacron;x, r&emacron;g-, king; see reg- in Indo-European roots + –cide.