coo

adjective

1. (slang) cool

interjection

1. Expression of fright, surprise, approval, etc.

noun

1. the sound made by a pigeon

Definition categories: event, cry

verb

1. speak softly or lovingly

- The mother who held her baby was cooing softly

Definition categories: communication, murmur

2. cry softly, as of pigeons

Definition categories: communication, emit, utter