What is Mind?

Let's see what Wikipedia has to say about Mind:

"Mind is the aspect of intellect and consciousness experienced as combinations of thought, perception, memory, emotion, will and imagination, including all unconscious cognitive processes. The term is often used to refer, by implication, to the thought processes of reason. Mind manifests itself subjectively as a stream of consciousness."

This seems useful enough. The key, I believe, is that mind is subjective. The issue of  conscious faculties versus unconcious ones is worth considering.