Source : Webster's Revised Unabridged Dictionary (1913)

Peri \Pe"ri\, n.; pl. {Peris}. [Per. per[=i] a female genus, a
   fairy.] (Persian Myth.)
   An imaginary being, male or female, like an elf or fairy,
   represented as a descendant of fallen angels, excluded from
   paradise till penance is accomplished. --Moore.

Source : WordNet®

peri
     n 1: a beautiful and graceful girl
     2: (Persian folklore) a supernatural being descended from
        fallen angels and excluded from paradise until penance is
        done