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Definition of Trojan noun from the Oxford Advanced Learner's Dictionary

Trojan

noun
 
/ˈtrəʊdʒən/
 
/ˈtrəʊdʒən/
Idioms
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  1. a person from the ancient city of Troy in Asia Minor
  2. (usually trojan)
    (also Trojan horse)
    (computing) a a computer program that seems to be helpful but that is, in fact, designed to destroy data, etc.
    • The file I downloaded turned out to be a trojan.
    Topics Computersc2
  3. Word OriginMiddle English: from Latin Troianus, from Troia ‘Troy’.
Idioms
work like a Trojan
  1. (old-fashioned) to work very hard
See Trojan in the Oxford Advanced American Dictionary

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