CANNULA
cannula
(noun) a small flexible tube inserted into a body cavity for draining off fluid or introducing medication
Source: WordNet® 3.1
Etymology
Noun
cannula (plural cannulas or cannulae or cannulæ)
(medicine) A tube inserted in the body to drain or inject fluid.
(aviation) A hose or tube that connects directly to an oxygen (O2) bottle/source from the user's nose, commonly used by aircraft pilots or others needing direct oxygen breathing apparatus.
Source: Wiktionary
Can"nu*la, n. Etym: [L. cannula a small tube of dim. of canna a reed,
tube.] (Surg.)
Definition: A small tube of metal, wood, or India rubber, used for various
purposes, esp. for injecting or withdrawing fluids. It is usually
associated with a trocar. [Written also canula.]
Source: Webster’s Unabridged Dictionary 1913 Edition