Meaning of confession

con•fes•sion

1. acknowledgment; avowal; admission: a confession of incompetence.
2. acknowledgment or disclosure of sin or sinfulness, esp. to a priest to obtain absolution.
3. something that is confessed.
4. a formal, usually written, acknowledgment of guilt by a person accused of a crime.
5. Also calleda formal profession of belief and acceptance of doctrines, as before being admitted to church membership.
6. the tomb of a martyr or confessor or the altar or shrine connected with it.