What is a syringe and how is it used?

Definition of syringe : a device used to inject fluids into or withdraw them from something (such as the body or its cavities): such asa : a device that consists of a nozzle of varying length and a compressible rubber bulb and is used for injection or irrigationb :

an instrument (as for the injection of medicine or the withdrawal of bodily fluids) that consists of a hollow barrel fitted with a plunger and a hollow needlec : a gravity device consisting of a reservoir fitted with a long rubber tube ending with an exchangeable nozzle that is used for irrigation of the vagina or bowel