See also Vibrator (album) for the 1995 album by Terence Trent D'Arby.
A vibrator is a mechanical device that is designed to generate vibrations. The vibration is often generated by an electric motor with an unbalanced weight (mass) on its driveshaft. If the motor is switched on, the rotating weight will resonate.
There are many different types of vibrator, including those in cellphones and pagers.