A Master Mind is when two or more people come together in a spirit of harmony. It is believed that when they come together they will engage a third, greater mind, which will allow new ideas to come to them.
Translating this into modern speech, a Master Mind is simply what we would call a ‘meeting’ or a ‘conference’ between two or more people. Boards of Directors and senior staff do this in business all the time. The third mind engaged is not a mind, of course, but represents the creative energy between two or more people who get together to improve something