stylet

/ˈstaɪ.lət/
noun
  1. A thin, pointed instrument or probe, used especially in medical procedures or as a part of a larger device.
    • The entomologist examined the insect's stylet, which it uses to pierce plants and suck sap.
    • The doctor used a stylet to guide the catheter into the patient's vein.
    • A stylet is often inserted into a needle to keep it clear of tissue during insertion.
Synonyms
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