Source : Webster's Revised Unabridged Dictionary (1913)

Hindoostanee \Hin"doo*sta"nee\, Hindustani \Hin"du*sta"ni\, a.
   [Hind. Hind[=u]st[=a]n[=i] an Indian, fr. Hind. and Per.
   Hind[=u]st[=a]n India.]
   Of or pertaining to the Hindoos or their language. -- n. The
   language of Hindostan; the name given by Europeans to the
   most generally spoken of the modern Aryan languages of India.
   It is Hindi with the addition of Persian and Arabic words.