What is "subahdar"

Subahdar \Su"bah*dar\, n. [Per. & Hind. s[=u]bah-d[=a]r, Per. s[=u]bah a province + d[=a]r holding, keeping.] A viceroy; a governor of a subah; also, a native captain in the British native army. [India]

n. (alternative form of subadar English)

Subahdar (also known as Nazim'' or in English as a "Subah''") was one of the designations of a governor of a Subah (province) during the Mughal era of India who was alternately designated as Sahib-i-Subah or Nazim. The word, Subahdar is of Persian origin

The Subahdar was the head of the Mughal provincial administration. He was assisted by the provincial Diwan, Bakshi, Faujdar, Kotwal, Qazi, Sadr, Waqa-i-Navis, Qanungo and Patwari. The Subahdars were normally appointed from the Mughal princes or the officers holding the highest mansabs (ranks).