The murmuring sound made by a dove or pigeon.
An expression of pleasure made by a person.
An expression of approval, fright, surprise, etc.
To speak in an admiring fashion, to be enthusiastic about.
To make a soft murmuring sound, as a pigeon.
Cool.
Any bird that whistles or is noted for its whistling vocalisations (applied regionally to various specific species).
The mountain beaver (Aplodontia rufa).
The goldeneye (certain ducks of genus Bucephala).
The whistling marmot (Marmota caligata).
Someone or something that whistles, or who plays a whistle as a musical instrument.
An audio-frequency electromagnetic wave produced by atmospheric disturbances such as lightning.
A broken-winded horse.
Any of several passerine birds of the genera Pachycephala and Coracornis, of Australasia and the western Pacific.