Definition of crown privilege in English:

crown privilege

noun

  • A right or advantage granted to, by, or on behalf of a monarch; especially (Law) (in the United Kingdom and some Commonwealth countries) the right of the Crown to withhold documentary evidence in any legal proceedings on the grounds that it is in the public interest to do so.

    In a legal context, Crown privilege is now usually referred to as public interest immunity.

Origin

Mid 17th century.