plural fixies
: a bicycle with a chain that directly transmits motion from the pedals to a fixed gear on the rear wheel hub
… a fixie uses a different hub than a multi-geared bike. … A fixie hub … makes the single gear "fixed" and renders coasting impossible.—
Sean Clancy
The city government said … that it has asked secondhand trading platforms to block sales of fixies that have had braking systems removed.—
Kim Hyun-bin
called also fixed-gear bike
Love words? Need even more definitions?
Merriam-Webster unabridged



