noun
- Usually handlebars.
- the curved steering bar of a bicycle, motorcycle, etc., placed in front of the rider and gripped by the hands.
- handlebar moustache.
- a bar or rod, usually of metal and having a handle at one end, used for handling, guiding, or maneuvering some object.
also handle-bar, 1867 in reference to bicycles, from handle (n.) + bar (n.1). Of mustaches, first recorded 1933.