【医】 皮下注射针

[ noun ]
a hollow needle
<noun.artifact>

Hypodermic needle \Hyp`o*der"mic need"le\, n.
1. 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.
[PJC]

2. a {hypodermic needle[1]} together with an attached
syringe.
[PJC]