can·nu·la also can·u·la 
(kănyə-lə)
(kănyə-lə)n. pl. can·nu·las or can·nu·lae (-lē′) also can·u·las or can·u·lae
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.
[Latin, diminutive of canna, reed; see CANE.]