Persuader runs metre carrying pint (7)
I believe the answer is:
tempter
'persuader' is the definition.
(thesaurus)
'runs metre carrying pint' is the wordplay.
'runs' is an anagram indicator.
'carrying' is an insertion indicator.
'pint' becomes 'pt'.
'metre' is an anagram of 'temer'.
'temer' enclosing 'pt' is 'TEMPTER'.
(Other definitions for tempter that I've seen before include "seducer" , "The Devil?" , "Siren" , "One who entices to do wrong" , "Someone offering enticements" .)