What is a master status?

Its a part of sociology. it is that in sociology it is the social position, identifying characteristics of an individual

Master status is a title in autecology applied to explain the status of highest interest in a specific person's life. The master status is frequently the most distinctive structure of personal integrity. General attributes are those of race or ethnicity, sex, sexual bearings, physical strength, age, financial status, faith or spirituality, and enlightenment.