/rɪ'fɜ:rəl; rɪ`fɝəl/
n
1 [U] referring (refer 3) or being referred to sb/sth 送交
*the referral of such cases to a doctor 将此类病人转给某医生诊治.
2 [C] person or thing referred (refer 3) to sb/sth 送交给某人[某事物]的人或事物
*several referrals from the clinic 从诊所转来的几个病人.

n [U and C]formal
when someone sends someone or something to another person to be helped or dealt with
referral to
　The doctor will give you a referral to a specialist in your area.
　Only 39 percent of patients were seen within four weeks of referral.