The phrase "lovely ball" does not have a specific or commonly understood meaning. It could refer to a formal event, such as a dance or gala, where guests dress up and enjoy music, dancing, and socializing while wearing elegant attire. Alternatively, it may also describe an occasion where people gather together for fun and entertainment in a festive atmosphere. However, without additional context or clarification, the phrase "lovely ball" is open to interpretation based on individual perspectives and experiences.