The feminine version of irrumator. Latin for a woman who thrusts her penis/strapon forcefully into another's mouth, i.e. in order to face-fuck them.
Marius: I've heard it whispered that Cornelia is quite the strapon enthusiast. Is it true?
Catullus: Oh, yes, she's quite the irrumatrix. Don't get on her wrong side, or you won't be speaking for a week.