"referral" in the noun sense
1. referral
a person whose case has been referred to a specialist or professional group
"the patient is a referral from Dr. Bones"
2. referral
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"
3. referral
the act of referring (as forwarding an applicant for employment or referring a matter to an appropriate agency)
Source: WordNet® (An amazing lexical database of English)
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