A virgin is a woman who has never had sex. Also refers to the first time, Virgo.
Hymen is a thin film covering the female vagina. Both sides of the film are light pink and the surface is wet. Usually. Immature hymen is small and thick. With the increase of age, the hymen becomes larger and thinner, and the adult hymen is about 1 to 2 mm thick. There is a hole with a diameter of 1 ~ 1.5 cm in the center of the hymen. Menstruation flows from here every month.