Accent of born scallywag (6)
I believe the answer is:
brogue
'accent' is the definition.
(thesaurus)
'born scallywag' is the wordplay.
'born' becomes 'b'.
'scallywag' becomes 'rogue' ('rogue' can be a synonym of 'scallywag').
'b'+'rogue'='BROGUE'
'of' is the link.
(Other definitions for brogue that I've seen before include "Worn" , "Thick and heavy shoe" , "Footprint could be left by this" , "What might identify an Irishman" , "Irish accent or strong shoe" .)