a tube, usually with a trocar, for insertion into body cavities or ducts, as for drainage
See cannula in American Heritage Dictionary 4
also can·u·la(kănˈyə-lə)
nounpl.can·nu·las also can·u·las or can·nu·lae also can·u·lae(-lēˌ)
A flexible tube, usually containing a trocar at one end, that is inserted into a bodily cavity, duct, or vessel to drain fluid or administer a substance such as a medication.
