(informal) Crazy, mad.

(hardware) A bar or shaft with an aperture for a bolt or threaded rod to attach to or pass through. / (informal) An insane person, a crazy person, a madwoman or madman.

(graphical user interface) A bar at the top of a graphical user interface containing links that allow users to move around the page and/or program

A drinking establishment featuring, as an enticement to customers, a musician playing a piano or similar keyboard-based instrument.

Synonym of party bike.

(music) A lever at the bridge or tailpiece of an electric guitar, used to add vibrato to the sound by changing the tension of the strings.

(obsolete, humorous) A barrister / (obsolete, humorous) A customer at a bar (place that sells alcoholic drinks)

A bar forming part of a vehicle's suspension system, that twists in response to the non-rotary motion of the wheels, absorbing vertical movement.

A strong U-shaped bar fastened to the frame of a vehicle, such as an off-road vehicle or a race car to protect the driver and passengers from being crushed in the event that the vehicle rolls over.

A singletree, the bar to which the coupling of a railway carriage is attached.