vibrator

1. A vibrating device used for massage or sexual stimulation. · They recommend a vibrator because it's a safe alternative to sex.
2. A device designed to electromechanically interrupt current flowing to the step-up transformer which was used to generate the high tension positive supply in old battery-operated (automotive) valve radios.
3. A trembler, as of an electric bell.
4. A vibrating reed for transmitting or receiving pulsating currents in a harmonic telegraph system.
5. A device for vibrating the pen of a siphon recorder to diminish frictional resistance on the paper.
6. An oscillator.
7. An ink-distributing roller in a printing machine, having an additional vibratory motion.
8. A vibrating reed in a musical instrument, especially a reed organ.

Plural vibrators