1. 移交;送交
Referral is the act of officially sending someone to a person or authority that is qualified to deal with them. A referral is an instance of this.

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

e.g. 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

e.g. the patient is a referral from Dr. Bones