A large amphitheater or stadium, especially the famous ancient Roman arena in Rome. Any large venue for sports or entertainment events.
From Latin 'Colosseum', named after the Colossus of Nero, a giant statue that stood nearby. The term comes from 'colossus' meaning gigantic statue, ultimately from Greek 'kolossos'.
The Colosseum wasn't actually called that in ancient times - Romans called it the Flavian Amphitheatre. The name stuck because of a nearby 100-foot statue, showing how landmarks often get named after their neighbors rather than their own features.
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