Definition of "supervisor"

(management) A person with the official task of overseeing the work of a person or group, or of other operations and activities.  examples

A person who monitors someone to make sure they comply with rules or other requirements set for them.  examples

(US) In certain states, an elected member of the governing body for a county which is called the board of supervisors.  examples

(computing) A process responsible for managing other processes.  quotations  examples