coo

Meanings

1. The murmuring sound made by a dove or pigeon.
2. An expression of pleasure made by a person.

1. To make a soft murmuring sound, as a pigeon.
2. To speak in an admiring fashion, to be enthusiastic about.

1. Cool.

1. An expression of approval, fright, surprise, etc.

1. Initialism of chief operating officer.
2. Initialism of country of origin.

Etymology

Onomatopoeic; compare Dutch koeren.