hypodermic needle

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A hollow needle used with a hypodermic syringe.
• noun A hypodermic syringe including the needle.

from the GNU version of the Collaborative International Dictionary of English.

• noun A small slender hollow metallic tube, sharp-pointed at one end and fitted at the other end with an adapter of larger internal diameter, designed for introduction of liquids directly into the bloodstream or other parts of the body of an animal.
• noun a hypodermic needle{1} together with an attached syringe.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A hollow needle with a sharp point intended to puncture the skin to draw a fluid from under the skin or inject a fluid under the skin, used as part of a hypodermic syringe.
• noun A syringe.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a hollow needle