(n.) 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Vireo. Retrieved September 25, 2026, from http://smartdefine.org/vireo/definitions/2079820 |
| Chicago | Webster's. 2011. "Vireo" http://smartdefine.org/vireo/definitions/2079820 (accessed September 25, 2026). |
| Harvard | Webster's 2011, Vireo, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/vireo/definitions/2079820>. |
| MLA | Webster's. "Vireo" 28 May 2011. Web. 25 September 2026. <http://smartdefine.org/vireo/definitions/2079820> |