Chased across area inhabited by ghosts (7)
I believe the answer is:
haunted
'inhabited by ghosts' is the definition.
(I've seen this before)
'chased across area' is the wordplay.
'chased' becomes 'hunted' (hunting is a kind of chasing).
'across' indicates putting letters inside.
'area' becomes 'a' (maths abbreviation).
'hunted' placed around 'a' is 'HAUNTED'.
(Other definitions for haunted that I've seen before include "Possessed" , "Beset by spirits" , "Inhabited by ghosts" , "tormented" , "Frequented by ghosts" .)