Definition of braining:
(n) :
The control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action.
(n) :
A part of the brain, especially associated with particular mental functions, abilities, etc.
(n) :
(informal) Mind.
(n) :
(informal) An intelligent person.
(n) :
(in the plural) Intellect.
(n) :
(in the singular) An intellectual or mental capacity.