Arena/əˈriːnə/ Definition 1 of 3Pro Tip 1/3Event Location The word 'arena' often refers to a venue for big events, not small gatherings. The championship game will take place in the city's biggest arena. Pro Tip 2/3Center of Action The central area of an arena is typically where the main activity occurs. The ice-skating competition was held at the center of the arena. Pro Tip 3/3Not Always Round Despite historical associations, modern arenas can be various shapes. The basketball arena was actually rectangular with seating all around.