Princess is a title used by a female member of a royal family, typically the daughter of a king or queen or the wife of a prince.
In modern usage, princess can also refer to:
1. A woman considered to be the best in a particular field ("the princess of pop")
2. A term of endearment for a beloved woman or girl
3. In slang, a pampered or spoiled girl
4. A female ruler of a small state or territory