n.1. A woman member of a royal family other than the monarch, especially a daughter of a monarch.
2. a. A woman who is a ruler of a principality.
b. A woman who is a hereditary ruler; a queen.
3. A noblewoman of varying status or rank.
4. The wife of a prince.
5. A woman regarded as having the status or qualities of a princess.
adj. Designed to hang in smooth, close-fitting, unbroken lines from shoulder to flared hem: a princess dress.