stylus

1. An ancient writing implement consisting of a small rod with a pointed end for scratching letters on clay, wax-covered tablets or other surfaces, and a blunt end for obliterating them.
2. A small implement with a pointed end used for engraving and tracing.
3. A small device resembling a pen used to input handwritten text or drawings directly into an electronic device with a touch-sensitive screen.
4. A hard-pointed pen-shaped instrument for marking on stencils used in a mimeograph machine.
5. A hard point, typically of diamond or sapphire, following a groove in a phonograph and transmitting the recorded sound for reproduction.
6. A pointed device formerly used to produce a groove in a record when recording sound.
7. A tool for making small dots on a piece of heavy paper, used to produce Braille writing for the blind by hand.
8. Synonym of style.

Plural styli