The state or condition of being a lord; hence (with his or your), a title applied to a lord (except an archbishop or duke, who is called Grace) or a judge (in Great Britain), etc
politeness You use the expressions Your Lordship, His Lordship, or Their Lordships when you are addressing or referring to a judge, bishop, or male member of the nobility. My name is Richard Savage, your Lordship His Lordship expressed the hope that the Law Commission might look at the subject