Left's embraced by new literary big guns (9)
I believe the answer is:
'big guns' is the definition.
(I've seen this before)
'left's embraced by new literary' is the wordplay.
'left' becomes 'l' (common abbreviation).
'embraced by' indicates putting letters inside.
'new' indicates anagramming the letters.
'literary' is an anagram of 'artilery'.
'l' put within 'artilery' is 'ARTILLERY'.
(Other definitions for artillery that I've seen before include "Gunners" , "Regiment" , "Large pieces" , "Army unit that uses big guns" , "Large guns for use on land" .)