Merriam-Webster Collegiate Dictionary - princess

 I. noun  Date: 14th century  1. archaic a woman having sovereign power  2. a female member of a royal family; especially a daughter or granddaughter of a sovereign  3. the consort of a prince  4. one likened to a ~; especially a woman of high rank or of high standing in her class or profession a pop music ~  II. adjective  or ~e  Etymology: French ~e ~, from prince  Date: 1867 close-fitting and usually with gores from neck to flaring hemline a ~ gown