an apparition of a dead person which is believed to appear or become manifest to the living, typically as a nebulous image:the building is haunted by the ghost of a monk [as modifier]:a ghost ship
a slight trace or vestige of something:she gave the ghost of a smile
a faint secondary image produced by a fault in an optical system or on a cathode ray screen, e.g. by faulty television reception or internal reflection in a mirror or camera.
ზმნა
Universal
1 [with object] act as ghostwriter of (a work):his memoirs were smoothly ghosted by a journalist
2 [no object, with adverbial of direction] glide smoothly and effortlessly:they ghosted up the river
the ghost in the machine
Philosophy the mind viewed as distinct from the body (usually used in a derogatory fashion by critics of dualism).