'Virgin' in the Bible

It happened at the end of two months, that she returned to her father, who did with her according to his vow which he had vowed: and she was a virgin. It was a custom in Israel,

Behold, here is my virgin daughter and his concubine. I will bring them out now. Humble them, and do with them what seems good to you; but to this man don't do any such folly."