intransitive. To make a low inarticulate sound indicative of grief, pain, hunger, etc.; to moan. Of an animal, bird, etc.: to make a similar sound…

intransitive. To coo as a pigeon.

To coo or crood, as a dove. Cf. crookle, v.2

intransitive. To coo, as a dove.

= crood, v.

intransitive. To make the soft murmuring sound or note characteristic of doves and pigeons.

= crookle, v.2

intransitive. Of a pigeon or a dove: to coo.