1. an instrument of metal, bone, or the like, used by the ancients for writing on waxed tablets, having one end pointed for incising the letters and the other end blunt for rubbing out writing and smoothing the tablet.
2. any of various pointed, pen-shaped instruments used in drawing, artwork, etc.
3. Computers . a pen-shaped device used on a display screen to input commands or handwritten text or drawings.
4. Audio .
a. Also called cutting stylus. a needle used for cutting grooves in making a disk recording to be played on a phonograph.
b. a needle for reproducing the sounds of a phonograph record.
5. any of various pointed wedges used to punch holes in paper or other material, as in writing braille.
6. any of various kinds of pens for tracing a line automatically, as on a recording seismograph or electrocardiograph.
Life has used it stylus
Cutting deep groves around your eyes
Yet you smile still
Your heart of stone as smooth
As the day it was first sculpted