Source : Webster's Revised Unabridged Dictionary (1913)

Passeres \Pas"se*res\, n. pl. [NL., fr. L. passer a sparrow.]
   (Zo["o]l.)
   An order, or suborder, of birds, including more that half of
   all the known species. It embraces all singing birds
   (Oscines), together with many other small perching birds.

Source : WordNet®

Passeres
     n : two names for the suborder of typical songbirds [syn: {Oscines},
          {suborder Oscines}, {suborder Passeres}]