Făn'tasm, n.

n. [O. Fr. fantasme, Pr., Sp., Pg., & It. fantasma, Lat. phantasma, Gr. φάντασμα, from φαντάζειν, to make visible, in the passive voice, to become visible, to appear. Usually written phantasm. See FANCY.] That which is formed by, or appears to, the imagination; a phantom; something not real.