vibrator
n. an appliance containing a small electric motor that produces a vibrating action, used to stimulate the genitals and other sensitive areas during masturbation or sexual activity with a partner. The device may be powered by batteries or by household electric current. Some vibrators strap on the hand, making the fingers vibrate during sexual stimulation. Another type has a vibrating mechanism on which a number of attachments of different sizes, shapes, and textures can be placed, and these stimulate the body directly. Other vibrators are cylinders that can be used externally or inserted into the vagina or anus.