Lolita is a slang term for a seductive, sexually attractive, or sexually precocious young girl.
In the marketing of pornography, "lolita" is used to refer to any attractive woman who has only recently reached the age of consent, or sometimes to refer to women who appear to be younger than the age of consent.
Origin
The term originated in the 1955 novel Lolita by Vladimir Nabokov where it was the nickname given to the young girl, Dolores, with whom the narrator, Humbert Humbert, is obsessed. 1 In the book itself, "Lolita" is specifically Humbert's nickname for Dolores, and "nymphet" is the general term for the type of young girl to whom Humbert is attracted, Dolores being one of them.
In the novel, Humbert defines nymphets as being between the ages of nine and fourteen.