The term "sole owner" refers to a person or entity that has complete and exclusive ownership over something. In other words, they are the only one who possesses rights and privileges related to that thing. For example, if someone is the sole owner of a business, it means that they have full control over the operations and decisions regarding the company without any input from others. Similarly, if an individual is the sole owner of a property or asset, it indicates that no one else has any legal claim or interest in it.