noun
- The sound made by a pigeon.
verb
- Speak softly or lovingly.
- usage: "The mother who held her baby was cooing softly"
- Cry softly, as of pigeons. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). coo. Retrieved September 20, 2026, from http://smartdefine.org/coo/definitions/1219713 |
| Chicago | WordNet. 2010. "coo" http://smartdefine.org/coo/definitions/1219713 (accessed September 20, 2026). |
| Harvard | WordNet 2010, coo, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/coo/definitions/1219713>. |
| MLA | WordNet. "coo" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/coo/definitions/1219713> |