- Gr. Legend in the Trojan War, a huge, hollow wooden horse with Greek soldiers hidden inside that is left at the gates of Troy: the Trojans bring it into the city, thinking it a gift, and the soldiers creep out and open the gates to the rest of the Greek army, which destroys the city
- any person, group, or thing that seeks to subvert a nation, organization, etc. from within
See Trojan horse in American Heritage Dictionary 4
- A subversive group or device placed within enemy ranks.
- The hollow wooden horse in which, according to legend, Greeks hid and gained entrance to Troy, later opening the gates to their army.
- Computer Science A program that appears to be legitimate but is designed to have destructive effects, as to data residing in the computer onto which the program was loaded.
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