Acetylsalicylic acid, commonly known as ASPIRIN (7 letters), is a widely used ANALGESIC (9 letters) that has been used for centuries to treat pain and inflammation. It is a type of non-steroidal anti-inflammatory drug (NSAID) that works by blocking the production of certain chemicals in the body that cause pain and inflammation. ASPIRIN is one of the most commonly used medications in the world and is available over-the-counter in many countries.