A salient feature of perjury (3)
I believe the answer is:
lie
'perjury' is the definition.
(thesaurus)
'a salient feature' is the wordplay.
'feature' indicates a hidden word (I've seen 'featuring' mean this).
'LIE' is hidden in the letters of 'salient'.
'of' acts as a link.
(Other definitions for lie that I've seen before include "Stretch out" , "Recline - untruth" , "Tell porkies" , "Couch" , "Perversion of the truth" .)