Vedas Not Clear Women Chastity Pancha Kanyas Chaste?

I have not been able to find a clear-cut definition of chastity of women relating to Physical interaction in the Vedas. Corrections, inputs are welcome. Smritis, especially the Manu Smriti is eloquent in describing the Adultery by men and the punishment ot be meted out to them, the need to protect women and how society will disintegrate because of a woman being not Chaste. However I have not been able to locate the definition of Adultery by women specifically. One finds the instance of Jamadagni, father of Parashurama, asking Parasuram to cut off his mother Renuka's head.