my lady

/M AY1 L EY0 D IY0/
noun
  1. 1

    (UK) Used in direct address to female peers of the realm, usually now excluding duchesses and, potentially, the Lords Spiritual.

  2. 2

    (UK) Used in direct address to female bishops.

  3. 3

    (UK) Used in direct address to the female Lord Mayors of certain important cities, including London and Canterbury.

  4. 4

    (UK) Used in direct address to certain female judges, particularly High Court Judges and above.