'handlebar' definitions:

Definition of 'handlebar'

(from WordNet)
noun
The shaped bar used to steer a bicycle

Definition of 'handlebar'

From: GCIDE
  • handlebar \han"dle*bar`\ n. The curved bar connected by a shaft to the front wheel of a bicycle or motorcycle, positioned nearly horizontally in front of the rider's seat, designed to be gripped by the rider while riding, and used to steer the vehicle. Usually used in the plural; as, don't let go of the handlbars. [WordNet 1.5 +PJC]