A syringe is a type of pump that consists of a plunger that fits within a tube called a barrel. This apparatus is typically used for sucking or ejcting liquid through the frontend. A needle is attached via a slip or leur lock into the front for ejection and withdrawal of medication or fluid.
It is also known as a hypodermic needle usually consisting of 3 parts - A barrel - plunger and syringe. They are callibrated in ML and generally sterile.