A Virgin

1. A person who has never had sexual intercourse, or sometimes, one who has never engaged in any sexual activity at all. [from mid-14th c.][1]
2. (Catholicism, Orthodoxy or historical) Someone vowed to virginity (usually a woman and often a consecrated virgin), or someone who died in defense of their virginity; (especially) one venerated as a saint. [from early 13th c.][2]
3. (informal) One who has never used or experienced a specified thing.
4. Any of several species of gossamer-winged butterflies of the family Lycaenidae.
5. (entomology) A female insect producing eggs from which young are hatched, though there has been no fecundation by a male; a parthenogenetic insect.

(person who has never had sexual intercourse): maiden (dated; used of a woman only), unicorn bait (slang, jocular), virgo intacta (medical term; used of a woman only), vestal