PJ Lev15:18 :ואיתתא פניתא די ישמש גבר עימה שכבת זרעא‏ : an unmarried woman with whom a man has sexual relations
See the entire entry for pnyh n.f. unmarried woman

PJ Lev15:18 :
See the entire entry for ši/uḵbā, šḵuḇtā n.f. ejaculation