Tyrannicide
Pronunciation : Ty*ran"ni*ci`de
Part of Speech : n.
Etymology : [L. tyrannicidium the killing of a tyrant, tyrannicida the killer of a tyrant; tyrannus a tyrant + caedere to kill: cf. F. tyrannicide.]
Definition : 1. The act of killing a tyrant. Hume.
2. One who kills a tyrant.
Source : Webster's Unabridged Dictionary, 1913