- (initialism) . chief operating officer.
- (initialism) . (context, international trade) country of origin.
- Noun. The murmuring sound made by a dove or pigeon.
- Verb. (transitive, or) To make a soft murmuring sound, as a pigeon.
- Verb. (intransitive) To speak in an admiring fashion, to be enthusiastic about.
- Adjective. (slang) Informal variation of cool.
- Interjection. Expression of fright, surprise, approval, etc.