referral (n.)a person whose case has been referred to a specialist or professional group;
the patient is a referral from Dr. Bones
referral (n.)a recommendation to consult the (professional) person or group to whom one has been referred;
the insurance company says that you need a written referral from your physician before seeing a specialist
referral (n.)the act of referring (as forwarding an applicant for employment or referring a matter to an appropriate agency);