- a person who rules or has authority in sacred matters; high priest.
- a person having high position or considerable authority.
- one of a body of officials or minor priests in certain ancient Greek temples.
- a person in a position of high priestly authority
- a person holding high rank in a religious hierarchy
- a person at a high level in a hierarchy
1570s, from Medieval Latin hierarcha, from Greek hierarkhes “leader of sacred rites, high priest” (see hierarchy).