Bit of wordplay means ignoring the leftmost edge (8)
I believe the answer is:
pungency
'edge' is the definition.
(thesaurus)
'bit of wordplay means ignoring the leftmost' is the wordplay.
I cannot quite see how this works, but
'wordplay' could be 'pun' (synonyms) and 'pun' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for pungency that I've seen before include "Acridity, piquancy" , "Sharpness" , "Sharp and strong taste or smell" .)