Source : Webster's Revised Unabridged Dictionary (1913)

Attar \At"tar\, n. [Per. 'atar perfume, essence, Ar. 'itr, fr.
   'atara to smell sweet. Cf. {Otto}.]
   A fragrant essential oil; esp., a volatile and highly
   fragrant essential oil obtained from the petals of roses.
   [Also written {otto} and {ottar}.]

Source : WordNet®

attar
     n : essential oil or perfume obtained from flowers [syn: {atar},
          {athar}, {ottar}]