DICT.TW Dictionary Taiwan

 Vir·e·o n.  Zool. Any one of numerous species of American singing birds belonging to Vireo and allied genera of the family Vireonidae. In many of the species the back is greenish, or olive-colored.  Called also greenlet.
 Note: ☞ In the Eastern United States the most common species are the white-eyed vireo (Vireo Noveboracensis), the red-eyed vireo (Vireo olivaceus), the blue-headed, or solitary, vireo (Vireo solitarius), the warbling vireo (Vireo gilvus), and the yellow-throated vireo (Vireo flavifrons). All these are noted for the sweetness of their songs.
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 Green·let n.
 1. Zool. One of numerous species of small American singing birds, of the genus Vireo, as the solitary, or blue-headed (Vireo solitarius); the brotherly-love  (V. Philadelphicus); the warbling greenlet (V. gilvus); the yellow-throated greenlet (V. flavifrons) and others. See Vireo.
 2. Zool, Any species of Cyclorhis, a genus of tropical American birds allied to the tits.
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 Vireo solitarius
      n : of eastern North America having a bluish-gray head and
          mostly green body [syn: solitary vireo]