The term 'Parts of Hypodermics' refers to the components of a hypodermic NEEDLE, which is a medical device used to inject substances into the body. The most important part of a hypodermic NEEDLE is the NEEDLE itself, which is also referred to as the 'NEEDLE' in this crossword puzzle. The other parts of a hypodermic NEEDLE include the hub, which is the part that connects the NEEDLE to the syringe, and the cannula, which is the hollow tube that allows the substance to be injected into the body.