any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
a clear and telling mental image; "he described his mental picture of his assailant"; "he had no clear picture of himself or his world"; "the events left a permanent impression in his mind"
(Islam) an invisible spirit mentioned in the Koran and believed by Muslims to inhabit the earth and influence mankind by appearing in the form of humans or animals