The Collaborative International Dictionary of English v.0.48:

Oriole \O"ri*ole\, n. [OF. oriol, oriouz, orieus, F. loriot (for
   l'oriol), fr. L. aureolus golden, dim. of aureus golden, fr.
   aurum gold. Cf. Aureole, Oriel, Loriot.] (Zool.)
   (a) Any one of various species of Old World singing birds of
       the family Oriolidae. They are usually conspicuously
       colored with yellow and black. The European or golden
       oriole (Oriolus galbula, or Oriolus oriolus) has a
       very musical flutelike note.
   (b) In America, any one of several species of the genus
       Icterus, belonging to the family Icteridae. See
       Baltimore oriole, and Orchard oriole, under
       Orchard.
       [1913 Webster]

   Crested oriole. (Zool.) See Cassican.
      [1913 Webster]

WordNet (r) 3.0 (2006):

oriole
    n 1: mostly tropical songbird; the male is usually bright orange
         and black [syn: Old World oriole, oriole]
    2: American songbird; male is black and orange or yellow [syn:
       New World oriole, American oriole, oriole]