Phrase in hit article (6)
I believe the answer is:
slogan
'phrase' is the definition.
(thesaurus)
'hit article' is the wordplay.
'hit' becomes 'slog' (slogging is a kind of hitting).
'article' becomes 'an' (indefinite article).
'slog'+'an'='SLOGAN'
'in' acts as a link.
(Other definitions for slogan that I've seen before include "Catchy phrase in advertisement etc" , "Memorable advertising phrase" , "'Motto, watchword (6)'" , "advertising catch phrase" , "Logo" .)