The term 'ringing sound in ear' is a medical condition known as tinnitus (8 letters). Tinnitus is a condition characterized by a ringing, buzzing, or other type of noise that is heard in one or both ears. It can be caused by a variety of factors, including exposure to loud noises, certain medications, and head or neck injuries. It can also be a symptom of an underlying medical condition. Treatment for tinnitus may include lifestyle changes, hearing aids, and medications.