sty·lus / ˈstīləs/ • n. (pl. -li / -ˌlī/ or -lus·es) 1. a hard point, typically of diamond or sapphire, following a groove in a phonograph record and transmitting the recorded sound for reproduction. ∎  a similar point producing such a groove when recording sound.2. an ancient writing implement, consisting of a small rod with a pointed end for scratching letters on wax-covered tablets, and a blunt end for obliterating them. ∎  an implement of similar shape used esp. for engraving and tracing. ∎  Comput. a penlike device used to input handwritten text or drawings directly into a computer or for input on a touch-sensitive monitor.

stylus (sty-lŭs) n.
1. a pencil-shaped instrument, commonly used for applying external medication.

2. see stilet.

stylus writing instrument XVIII; gnomon of a sundial XVIII. — erron. sp. of L. stilus; see STYLE.