male virginity; male virgin
Refers specifically to a male who has not had sexual intercourse, or the state of being one. Often used in contrast to 処女 (female virgin).
See also: 処女
He is still a virgin.
He lost his virginity after becoming a university student.
To lose one's virginity (as a male).
Catholic nun; sister
Christian term for a nun or religious sister. Rare in everyday Japanese; mostly encountered in religious contexts.
She devoted her life as a nun in the convent.
He's a bit awkward about romance because of his lack of experience.
バージン is a casual loanword for 'virgin' that can apply to either sex, whereas 童貞 is the native Japanese term restricted to males.
童貞 is the standard, neutral term for male virginity, while ＤＴ is its casual internet-slang abbreviation, often used jokingly or self-deprecatingly.
The kanji 童 (child) and 貞 (chastity) combine to suggest 'childlike chastity', but the exact historical derivation is uncertain. The word is conventionally used for male virginity.