\Sty"let\, n. [F., dim. of style; cf. It. stiletto. See
{Stiletto}.]
A small poniard; a stiletto.
2. (Surg.)
   (a) An instrument for examining wounds and fistulas, and
       for passing setons, and the like; a probe, -- called
       also {specillum}.
   (b) A stiff wire, inserted in catheters or other tubular
       instruments to maintain their shape and prevent
       clogging.
3. (Zo["o]l.) Any small, more or less rigid, bristlelike
   organ; as, the caudal stylets of certain insects; the
   ventral stylets of certain Infusoria.