Definition of "bicycle"

noun:
- A vehicle that has two wheels, one behind the other, a steering handle, and a saddle seat or seats and is usually propelled by the action of a rider's feet upon pedals.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- A traveling block used on a cable in skidding logs.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- The best possible hand in lowball.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
verb:
- To travel or exercise using a bicycle.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License