Source : Webster's Revised Unabridged Dictionary (1913)

Rani \Ra"ni\, n. [Hind. r[=a]n[=i], Skr. r[=a]jn[=i]. See
   {Rajah}.]
   A queen or princess; the wife of a rajah. [Written also
   {ranee}.] [India]

Source : WordNet®

rani
     n : (the feminine of raja) a Hindu princess or the wife of a
         raja [syn: {ranee}]