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tyrannĭcīda, ae, m. [tyrannus-caedo], a killer of a tyrant, a tyrannicide, Sen. Ira, 2, 23, 1; Plin. 7, 23, 23, § 87; Suet. Tib. 4; id. Vit. Luc.; Quint. 5, 10, 36; 5, 10, 59; 7, 3, 7; 7, 7, 2; 7, 7, 5; Tac. Or. 35.