Ancient theater is a term used to describe the theaters of ancient Greece and Rome. ODEON (5 letters) is an ancient Greek theater, typically circular or semicircular in shape, used for musical performances. Odeum (5 letters) is an ancient Greek theater, typically rectangular in shape, used for poetry readings and other literary performances. MEN (3 letters) is an abbreviation for the Greek word 'theatron', which means theater. Obie (4 letters) is an abbreviation for the Latin word 'ORCHESTRA', which refers to the area of the theater where the chorus and musicians performed.