A vocal performance with no instrumental accompaniment.
In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella.
Singing solely or mainly without instrumental accompaniment.
Related to a form of purely vocal music mostly associated with American college performance groups.
The vocalisations of various birds or other animals.
The vocalisations of a Eurasian magpie, Pica pica.
One who chats.
The sound of talking.
The situation where a drill or similar tool vibrates and tears the material rather than cutting it cleanly.
An intermittent noise, as from vibration.
In national security, the degree of communication between suspect groups and individuals, used to gauge the degree of expected terrorist activity.
A user of chat rooms.
Talk, especially meaningless or unimportant talk.
To talk idly.
To make a noise by rapid collisions.
To utter sounds which somewhat resemble language, but are inarticulate and indistinct.