Source : Webster's Revised Unabridged Dictionary (1913)

Anura \A*nu"ra\ ([.a]*n[=u]"r[.a]), n. pl. [NL., fr. Gr. 'an
   priv. + o'yra` a tail.] (Zo["o]l.)
   One of the orders of amphibians characterized by the absence
   of a tail, as the frogs and toads. [Written also {anoura}.]

Source : WordNet®

Anura
     n : frogs, toads, tree toads [syn: {Salientia}, {order Salientia},
          {order Anura}, {Batrachia}, {order Batrachia}]