Lou is a common name that can refer to various individuals or characters. It is often used as a short form of names like Louis or Louise. In popular culture, Lou can also refer to fictional characters in movies, books, or television shows, each with their own unique traits and stories. In addition to being a name, Lou can also represent various concepts, such as Lou Gehrig, a famous baseball player known for his impressive career and battle with ALS, or Lou Reed, a renowned musician and songwriter. The name carries different meanings depending on the context in which it is used.