{ } n. [ L. amphitheatrum, fr. Gr. &unr_;; 'amfi` + &unr_; theater: cf. F. amphithéâtre. See Theater. ] 1. An oval or circular building with rising tiers of seats about an open space called the arena. [ 1913 Webster ]

☞ The Romans first constructed amphitheaters for combats of gladiators and wild beasts. [ 1913 Webster ]

2. Anything resembling an amphitheater in form; as, a level surrounded by rising slopes or hills, or a rising gallery in a theater. [ 1913 Webster ]