Definition of aga
plural -s
:a man of authority who bears a title of respect: such as
a
:a military or civil officer in the Ottoman Empire
- a vast body of dragoons … under … their great aga
- —Jonathan Swift
b
:a Turkish chief
- the khans … and agas … are probably the oldest landed aristocracy of the world
- —Harold Lamb
c
:a religious leader
- the Aga Khan … claims descent from Fatima
- —H. G. Rawlinson
