Turn up with line about power or force (6)
I believe the answer is:
compel
'force' is the definition.
(thesaurus)
'turn up with line about power' is the wordplay.
'turn up' becomes 'come' (I've seen this before**).
'with' says to put letters next to each other.
'line' becomes 'l'.
'about' indicates putting letters inside.
'power' becomes 'p'.
'come'+'l'='comel'
'comel' placed around 'p' is 'COMPEL'.
'or' is the link.
(Other definitions for compel that I've seen before include "drive on" , "Urge on, force" , "Force, oblige to do something" , "Use force or influence to make person do something" , "Coerce, force to obey" .)