Etymology

derny

D2E1R1N1Y4

Today it means: A motorized bicycle for paced cycling events such as keirin. Full definition →

French derny
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The story

  1. French · borrowed fromderny
  2. English todayderny

Borrowed from French derny, named after the French manufacturer of the original derny bicycle, Roger Derny et Fils.

Etymology from Wiktionary, CC BY-SA 4.0.