
It is a kind of a priviliged communication which is passed from one person to a particular person and is supposed to be heard or read if it is written only by that person.It should not be disclosed in a trial as a source of evidence.It is between two people who share a private relationship like husband-wife,attoney-client,doctor-patient etc.
Found on
http://www.encyclo.co.uk/local/21213

Information exchanged between two people who (1) have a relationship in which private communications are protected by law, and (2) intend that the information be kept in confidence. The law recognizes certain parties whose communications will be considered confidential and protected, including spouses, doctor and patient, attorney and client, and p...
Found on
http://www.nolo.com/dictionary/confidential-communication-term.html

In law, a confidential communication is a communication made by one person to another which the latter cannot be compelled to give in evidence as a witness. Generally all communications made between a client and his agent, between the agent and the counsel in a suit, or between the several parties to a suit, are treated as confidential. The privile...
Found on
http://www.probertencyclopaedia.com/browse/AC1.HTM

a confidential statement made to a lawyer, doctor, or pastor, or to one's husband or wife, privileged against disclosure in court if the privilege is claimed by the client, patient, penitent, or spouse. Also called
Found on
https://www.infoplease.com/dictionary/confidential-communication
No exact match found.