Like a word, however Balzac uses it (6)
I believe the answer is:
verbal
'like a word' is the definition.
'however balzac uses it' is the wordplay.
'uses it' indicates a hidden word.
'VERBAL' is hidden within 'however balzac'.
(Other definitions for verbal that I've seen before include "It's said" , "Spoken (abuse)" , "Expressed in words" , "Sound (the hour); find (oil)" , "statement to police" .)