Barrett is a name that can refer to various subjects, including a surname, a given name, or even a brand. In the context of firearms, Barrett is well-known for manufacturing high-quality rifles, particularly the Barrett M82, a .50 caliber sniper rifle used by military and law enforcement agencies worldwide. In addition to firearms, Barrett can also refer to Barrett's esophagus, a medical condition where the lining of the esophagus changes due to prolonged acid exposure, often related to gastroesophageal reflux disease (GERD). This condition can increase the risk of esophageal cancer and requires medical monitoring.