Definition of "confessor"

confessor

/kənˈfɛsə/

noun
plural confessors, feminine confessoress
1. One who confesses faith in Christianity in the face of persecution, but who is not martyred.
  Quotations
  Confessors provided the troubled Church with an alternative sort of authority based on their sufferings, particularly when arguments began about how and how much to forgive those Christians who had given way to imperial orders – the so-called ‘lapsed’.
  2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 174
2. One who confesses to having done something wrong.
3. (Roman Catholicism) A priest who hears confession and then gives absolution