Belle is a French word meaning "beautiful" when referring to a female.
In English contexts, belle typically refers to:
1. The most beautiful or admired woman at an event ("the belle of the ball")
2. A Southern belle - a stereotype of a young woman from the American South
3. The female protagonist in Disney's "Beauty and the Beast" (French: La Belle et la Bête)
4. In names like "Belle Époque" (Beautiful Era) referring to late 19th-early 20th century France