pushchair

The story

1. Proto-Indo-European*pel-
2. Proto-Indo-European*pelh₂-
3. Proto-Italic*pelnō
4. Latinpellō
5. Latinpulsō
6. Old Frenchpoulser
7. Middle Frenchpousser
8. Middle Englishpushen
9. Englishpush
10. Proto-Indo-European*ḱe?
11. Proto-Indo-European*ḱóm
12. Proto-Indo-European*ḱm̥-th₂der.?
13. Proto-Hellenic*kətá
14. Ancient Greekκατά (katá)
15. Proto-Indo-European*sed-
16. Proto-Indo-European*sedreh₂
17. Proto-Hellenic*hédrā
18. Ancient Greekἕδρα (hédra)
19. Ancient Greekκᾰθέδρᾱ (kăthédrā)
20. Latincathedra
21. Old Frenchchaiere
22. Middle Englishchayere
23. Englishchair
24. English todaypushchair

From push + chair.