penopause

The story

1. Proto-Indo-European*pes-
2. Proto-Indo-European*pes-ni-s
3. Proto-Italic*peznis
4. Latinpēni
5. Englishpenis
6. Proto-Indo-European*med-
7. Proto-Indo-European*meh₁-?
8. Proto-Indo-European*mḗh₁n̥s
9. Proto-Hellenic*méns
10. Ancient Greekμήν (mḗn)
11. Frenchméno-
12. Ancient Greekπαύω (paúō)
13. Ancient Greekπαῦσις (paûsis)
14. Latinpausa
15. Frenchménopause
16. Englishmenopause
17. English todaypenopause

Blend of penis + menopause.