1. (n.) A small poniard; a stiletto.

2. (n.) An instrument for examining wounds and fistulas, and for passing setons, and the like; a probe, -- called also specillum.

3. (n.) A stiff wire, inserted in catheters or other tubular instruments to maintain their shape and prevent clogging.

4. (n.) Any small, more or less rigid, bristle like organ; as, the caudal stylets of certain insects; the ventral stylets of certain Infusoria.