chaircover

The story

1. Proto-Indo-European*ḱe?
2. Proto-Indo-European*ḱóm
3. Proto-Indo-European*ḱm̥-th₂der.?
4. Proto-Hellenic*kətá
5. Ancient Greekκατά (katá)
6. Proto-Indo-European*sed-
7. Proto-Indo-European*sedreh₂
8. Proto-Hellenic*hédrā
9. Ancient Greekἕδρα (hédra)
10. Ancient Greekκᾰθέδρᾱ (kăthédrā)
11. Latincathedra
12. Old Frenchchaiere
13. Middle Englishchayere
14. Englishchair
15. Proto-Indo-European*ḱóm
16. Proto-Italic*kom
17. Proto-Italic*kom-
18. Latincon-
19. Proto-Indo-European*h₁ep-
20. Proto-Indo-European*h₁éps
21. Proto-Indo-European*h₁épi
22. Proto-Indo-European*h₂wer-
23. Latinoperiō
24. Latincooperiō
25. Old Frenchcovrir
26. Middle Englishcoveren
27. Englishcover
28. English todaychaircover

From chair + cover.