my Lord. Used when speaking respectfully of or to a man who is of high rank, esp. a member of the nobility, a king, or a bishop. Sometimes with of…

A person of high social status; a person of note. Obsolete.

Mr Justice: (with a surname) a form of address or reference to a man who is a judge of a superior court or (formerly) a Justice of the Peace.

Preceded by a possessive adjective, as a form of address or reference to a justice or judge.

(a) preceded by a possessive adjective, as a form of address or reference to a Lord Chief Justice; (b) the position or office of Lord Chief Justice.

With possessive adjective and frequently with capital initial, as Your Honour, etc.: (a) a deferential form of address for any person of higher rank…

With my. In representations of the hurried or affected pronunciation used when addressing a judge in court, or by clerks in the House of Lords. Cf…

British. Mrs Justice: (with a surname) a form of address or reference to a woman who is a judge of a superior court, irrespective of marital status.

North American (chiefly Canadian). Madam Justice: (with a surname) a form of address or reference to a woman who is a judge of a superior court.