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