Citta is a broad term for the mind and its contents. The Yoga Sūtras define yoga as the stilling of the movements of citta. In Vedānta citta is the aspect of the inner instrument that stores impressions and remembers. In Buddhism the word is used for mind or consciousness in general.
Citta
Mind-stuff: the field of consciousness in which thoughts, impressions and memories arise.
Also: Chitta