- Main Entry:
- coo

- Pronunciation:
-
\ˈkü\
- Function:
- intransitive verb
- Etymology:
- imitative
- Date:
- 1577
1
: to make the low soft cry of a dove or pigeon or a similar sound
2
: to talk fondly, amorously, or appreciatively <the family cooed over the baby pictures>
— coo noun