aquabike

The story

1. Proto-Indo-European*h₂ékʷeh₂
2. Proto-Italic*akʷā
3. Latinaqua
4. Middle Englishaqua
5. Englishaqua-
6. Proto-Indo-European*dwóh₁
7. Proto-Indo-European*trísinflu.
8. Proto-Indo-European*dwís
9. Proto-Italic*dwis
10. Old Latinduis
11. Latinbis
12. Frenchbi-
13. Proto-Indo-European*kʷelh₁-redup.
14. Proto-Indo-European*kʷékʷlos
15. Proto-Hellenic*kʷókʷlos
16. Proto-Hellenic*kúklos
17. Ancient Greekκύκλος (kúklos)
18. Late Latincyclus
19. Frenchcycle
20. Frenchbicycle
21. Englishbicycleclip.
22. Englishbike
23. English todayaquabike

From aqua- + bike.