1 an illusion, a phantom.
2 (usu. foll. by of) an illusory likeness.
3 a supposed vision of an absent (living or dead) person.
Derivatives:
phantasmal adj. phantasmic adj.
Etymology: ME f. OF fantasme f. L f. Gk phantasma f. phantazo make visible f. phaino show
Useful english dictionary. 2012.