The term 'roaring sound' can be represented by two crossword solutions: RAH (3 letters) and THUNDER (7 letters). RAH is an exclamation of joy or triumph, often used to cheer on a team or individual. It is also used to express enthusiasm or approval. THUNDER is a loud, booming sound caused by the rapid expansion of air heated by lightning. It is usually accompanied by flashes of lightning and heavy rain. Both of these words are associated with loud, powerful sounds that can be heard from a distance.