Noun
one of the inherent cognitive or perceptual powers of the mind
Source: WordNetThe reluctance to recognize the Will as a separate, autonomous mental faculty finally ceded during the long centuries of Christian philosophy... Hannah Arendt
Although the task of cognitive neuroscience is to describe how the brain creates the mind, historically it has progressed by investigating how a certain area of the brain supports a given mental faculty. Source: Internet
The intuitionists believed that aesthetic experience was disclosed by a single mental faculty of some kind. Source: Internet