Pressure damaged core coin (8)
I believe the answer is:
coercion
'pressure' is the definition.
(thesaurus)
'damaged core coin' is the wordplay.
'damaged' indicates an anagram.
'core'+'coin'='corecoin'
'corecoin' with letters rearranged gives 'COERCION'.
(Other definitions for coercion that I've seen before include "The act of persuasion with the threat of force" , "Duress - compulsion" , "Use of force or intimidation" , "Forceful persuasion" , "Force majeure" .)