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.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.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.n. In the reed-organ, one of the reeds by which the tone is produced.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.