vibrator

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Something that vibrates.
2. n. An electrically operated device used for massage.
3. n. An electrical device consisting basically of a vibrating conductor interrupting a current.

Century Dictionary and Cyclopedia

1. n. Any arm or lever pivoted at one point and free to swing or vibrate between stops, usually adjustable in position; in general uses, such a device operating at high speeds or frequency.
2. n. An appliance with a rubber or other tip of variable shape which is made to oscillate very rapidly by means of electricity or some mechanical device: employed in mechanicotherapy to give vibratory massage to a part.
3. n. In electricity or telegraphy, a reed the vibrations of which are made to open and close the electric circuit and hence transmit pulsatory currents; also, a reed acted on by pulsatory currents by means of an electromagnet, and hence made to respond to the vibrations of a corresponding reed sending these currents from a distance. See harmonic telegraph, under telegraph.
4. n. In the reed-organ, one of the reeds by which the tone is produced.
5. n. In printing, an inking-roller that has a vibrating as well as a rotary movement, which aids the distribution of ink on the inking-table of a cylinder-press.

Wiktionary

1. n. A device that vibrates or causes vibration.
2. n. A vibrating device used for massage or sexual stimulation.
3. n. A device designed to electromechanically interrupt current flowing to the stepup transformer which was used to generate the high tension positive supply in old battery operated (automotive) valve radios.

GNU Webster's 1913

1. n. (Elec.) A trembler, as of an electric bell. An oscillator.
2. n. An ink-distributing roller in a printing machine, having an additional vibratory motion.
3. n. (Music) A vibrating reed, esp. in a reed organ.
4. n. (Weaving) Any of various vibrating devices, as one for slackening the warp as a shed opens.
5. n. An attachment, usually pneumatic, in a molding machine to shake the pattern loose.
6. n. a small electrical device held in the hand, with a motor that causes the device and hand to vibrate, and is used for vibratory massage.

WordNet 3.0

1. n. mechanical device that produces vibratory motion; used for massage
2. n. a mechanical device that vibrates