Extraordinary mental capacity.
Inspiration, a mental leap, an extraordinary creative process.
Someone possessing extraordinary intelligence or skill; especially somebody who has demonstrated this by a creative or original work in science, music, art etc.
The tutelary deity or spirit of a place or person.
Ingenious, brilliant, very clever, or original.
Brains; a person's ability to think.
A collection of cell bodies and (usually) dendritic connections, in contrast to white matter.
Literal brains as a general substance.