re ‧ gis ‧ trar /ˌredʒəˈstrɑː◂, ˌredʒɪˈstrɑː◂ $ ˈredʒəstrɑːr/ BrE AmE noun [countable]
1 . someone who is in charge of official records of births, marriages, and deaths
2 . an official of a college or university who deals with the running of the college
3 . British English a hospital doctor who has finished his or her training but is of a lower rank than a ↑ consultant