perineum

The story

1. Ancient Greek · derived fromπηρίς“scrotum”
2. Ancient Greek · derived fromπερίς“penis”
3. Ancient Greek · derived fromπερίνεος, περίνεοι“male genitals”
4. Ancient Greek · derived fromπερίναιον“space between the anus and scrotum”
5. Late Latin · borrowed fromperinaeum
6. English todayperineum

Borrowed from Late Latin perinaeum, from Ancient Greek περίναιον (perínaion, “space between the anus and scrotum”), from Ancient Greek περίνεος, περίνεοι (períneos, períneoi, “male genitals”), itself from earlier Ancient Greek περίς (perís, “penis”) through influence from Ancient Greek πηρίς (pērís, “scrotum”).