A central line is a medical device that is inserted into a patient's body in order to administer medication, draw blood, or monitor fluid levels. There are several synonyms for this type of device depending on its particular use. For example, a central venous catheter (CVC) is a type of central line that is used to administer medication or fluids directly into the veins. A peripherally inserted central catheter (PICC) is similar to a CVC but is inserted into a vein in the arm rather than the chest. A tunneled central line is a type of catheter that is placed under the skin and is used for long-term administration of medication or fluids. Overall, these synonyms allow medical professionals to communicate more efficiently and effectively.