A hymen thats been blown away by a gigantic cock, often resulting in the unification of the two primary orifi (plural: orifice) into a vaganus.
1) The hunt for Red October led Sean Connery's team into the depths of Katherine Kuhlmans unchatered poes. After the submarine passed through her heavenly gates she was left with a terribly messy parous introitus, later spiritually healed.

2) I have SUCH a huge parous introitus, I can fuck a donkey sideways.
by P.I. Staker January 7, 2008
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The outside hole before you enter the vagina. You throw this word around to make yourself look smart in front of your friends.
While playing "just the tip" with my girlfriend I just barely passed through the introitus
by Ammon.Chung.Pussypounder1991 September 8, 2016
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