What exactly does the Catholic Church mean by the "Virginity" of Mary?

Possible ways to understand "***virginity***" : - Some people may define it as no sexual event whatsoever. - Some may define as not having intercourse with a male. - Some may define it as not participating in any intimate acts with a male. - Some may define it as an intact hymen. I have a problem with the last one, since a lot of girls are not born with a hymen, or the hymen can be damaged in sports activities. I can't see a logical reason to think that the Blessed mother was definitely born with one or didn't damage it with non sexual physical activity. **So, what exactly does the Catholic Church mean by the "Virginity" of Mary?**