- bird with bright plumage - diamond bird - 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 O.
oriolus) has a very musical flutelike note. - In America, any one of several species of the genus
Icterus, belonging to the family Icteridae. See Baltimore oriole, and
Orchard oriole, under Orchard.