Nous means mind or intellect. Anaxagoras made it the ordering principle of the cosmos, Aristotle the divine thought thinking itself. For Plotinus it is the second reality, emanating from the One, in which all the Forms are eternally present. Christian writers used it for the highest part of the soul.
Nous
Intellect: in Greek philosophy, the highest faculty of mind, and in Plotinus the second hypostasis, eternal thought.
Also: intellect