(Internet) A protocol for instant communication via the Internet. Users connect to a network and join channels (chat rooms) where they can converse in typed text with other participants.

A means, attitude or position of defense.

The small entrails of a calf or hog.

A pattern, a way of doing something, especially (now often derogatory) a pattern of thought, a system of beliefs, a conceptual framework. / An example serving as the model for such a pattern.