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Definition of Gaius
1. Noun. Roman Emperor who succeeded Tiberius and whose uncontrolled passions resulted in manifest insanity; noted for his cruelty and tyranny; was assassinated (12-41). 
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1. Noun. Roman Emperor who succeeded Tiberius and whose uncontrolled passions resulted in manifest insanity; noted for his cruelty and tyranny; was assassinated (12-41).