To inhabit, or visit frequently (most often used in reference to ghosts).
A couple of ghosts haunt the old, burnt-down house.
To make uneasy, restless.
The memory of his past failures haunted him.
To stalk, to follow
The policeman haunted him, following him everywhere.
To live habitually; to stay, to remain.
To accustom; habituate; make accustomed to.
To practise; to devote oneself to.
To persist in staying or visiting.
A particular instance of haunting; a ghostly habitation.
During the haunting, strange voices and noises were heard and objects flew off tables.
Remaining in the mind; not easily forgotten.
He had a haunting gaze.