n.

1. 匕首
2. 通管丝；锥刺
3. 【动】小针刺；螫针

n.

1. Medicine  a slender probe.
   ▸a wire or piece of plastic run through a catheter or cannula to stiffen or clear it.
2. Zoology  (in an invertebrate) a small style, especially a piercing mouthpart of an insect.