Sardar

Sardar, a word of Indo-Iranian origin also spelled as Sirdar or Serdar, is a title of nobility (sir-, sar/sair- means "head or authority" and -dār means "holder" in Sanskrit and Avestan respectively) that was originally used to denote princes, noblemen, and other aristocrats. It has also been used to denote a chief or leader of a tribe or group. It is used synonymously with the title Amir.