Spirit making wild hog turn left (5)
I believe the answer is:
ghoul
'spirit' is the definition.
(I know that ghoul is a type of evil spirit)
'wild hog turn left' is the wordplay.
'wild' indicates anagramming the letters.
'turn' becomes 'u' (a 'U-turn' is a kind of turn).
'left' becomes 'l' (common abbreviation).
'hog' is an anagram of 'gho'.
'gho'+'u'+'l'='GHOUL'
'making' is the link.
(Other definitions for ghoul that I've seen before include "malevolent spirit" , "Corpse-loving phantom" , "shade" , "Spirit that robs graves and devours corpses" , "Evil spirit or phantom" .)