lord

1 :  one having power and authority over others:a :  a ruler by hereditary right or preeminence to whom service and obedience are dueb :  one of whom a fee or estate is held in feudal tenurec :  an owner of land or other real (see ¹real 1) propertyd obsolete :  the male head of a householde :  husbandf :  one that has achieved mastery or that exercises leadership or great power in some area a drug lord

2 capitalized a :  god 1b :  jesus

3 :  a man of rank or high position: such asa :  a feudal tenant whose right or title comes directly from the kingb :  a British nobleman: such as (1) :  baron 2a (2) :  a hereditary peer of the rank of marquess, earl, or viscount (3) :  the son of a duke or a marquess or the eldest son of an earl (4) :  a bishop of the Church of Englandc Lords plural :  house of lords

4 —used as a British title: such asa —used as part of an official title Lord Advocate Lord Mayorb —used informally in place of the full title for a marquess, earl, or viscountc —used for a barond —used by courtesy before the name and surname of a younger son of a duke or a marquess

5 :  a person chosen to preside over a festival