The term 'ARENA SOUND' can be broken down into two crossword solutions: ROAR (4 letters) and OLE (3 letters). ROAR is a loud, deep sound made by a large animal such as a lion or bear. It is often used to express anger or excitement. OLE is a Spanish word that is used to express approval or appreciation. It is often heard in the context of cheering for a sports team or performer. Together, these two words describe the sound of an arena, which is typically filled with cheering and roaring from the audience.