stylet
Concise Oxford English Dictionary © 2008 Oxford University Press:
stylet /ˈstʌɪlɪt/
▶noun
- 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.
'stylet' also found in these Oxford entries:

