Trojan Horse

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Tro·jan Horse • n. Greek Mythol. a hollow wooden statue of a horse in which the Greeks concealed themselves in order to enter Troy. ∎  (also Trojan horse) fig. a person or thing intended secretly to undermine or bring about the downfall of an enemy or opponent: the rebels may use this peace accord as a Trojan horse to try and take over. ∎  (also Trojan horse) Comput. a program designed to breach the security of a computer system while ostensibly performing some innocuous function.

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