Etymology

cogwheel

C3O1G2W4H4E1E1L1

Today it means: A gear wheel. Full definition →

English wheel ← Middle English whel ← Old English hwēol
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The story

  1. Proto-Indo-European*gēw-
  2. Proto-Indo-European*gugā
  3. Proto-Germanic*kuggō
  4. Old Norse*koggr
  5. Middle Englishcogge
  6. Englishcog
  7. Proto-Indo-European*kʷelh₁-redup.
  8. Proto-Indo-European*kʷekʷléh₂
  9. Proto-Germanic*hweulō
  10. Old Englishhwēol
  11. Middle Englishwhel
  12. Englishwheel
  13. English todaycogwheel

From cog + wheel.

Etymology from Wiktionary, CC BY-SA 4.0.