[ty.ran.ni.cide] n [in sense 1, fr. F, fr. L tyrannicidium, fr. tyrannus + -i- + -cidium -cide (killing); in sense 2, fr. F, fr. L tyrannicida, fr. tyrannus + -i- + -cida -cide (killer)] (1650) 1: the act of killing a tyrant
2: the killer of a tyrant