a person whose job is to keep official records, especially of births, marriages and deaths 登记员；户籍管理员 the senior officer who organizes the affairs of a college or university （大学的）教务长，教务主任，注册主任 a doctor working in a British hospital who is training to become a specialist in a particular area of medicine （英国医院的）专科住院医生 a paediatric registrar 儿科住院医生
Word Originlate 17th cent.: from medieval Latin registrarius, from registrum, alteration of regestum, singular of late Latin regesta ‘things recorded’, from regerere ‘enter, record’.