1. a large stadium or arena used for sports events, concerts, or other public entertainment
2. the Colosseum, the ancient Roman amphitheater in Rome
Usage: historical; often capitalized

Examples

• The basketball game will be held at the city’s new coliseum.
• Thousands of fans packed the coliseum for the concert.
• The coliseum can seat over 20,000 people.
• We visited the famous coliseum in Rome during our vacation.
• The hockey team plays their home games at the downtown coliseum.
• The coliseum was built in the 1970s and recently renovated.