: the power or process of creating especially unrealistic or improbable mental images in response to psychological need <an object of fantasy>; also: a mental image or a series of mental images (as a daydream) so created <sexual fantasies>
: a coin usually not intended for circulation as currency and often issued by a dubious authority (as a government-in-exile)
Mental images or imaginary narratives that distort or entirely depart from reality. Primary fantasies arise spontaneously from the unconscious, while secondary fantasies are consciously summoned and pursued. Sigmund Freud saw fantasy as a vehicle for the expression of repressed desires (seerepression). Fantasy is important in the lives of children and is a vital element in play. In adult life it is crucial to creative thinking and the making of art. Fantasy can become destructive if it serves as a constant refuge from the world of reality and a source of delusions.