Break batting before boundary (8)
I believe the answer is:
infringe
'break' is the definition.
(infringing is a kind of breaking)
'batting before boundary' is the wordplay.
'batting' becomes 'in'.
'before' says to put letters next to each other.
'boundary' becomes 'fringe' (fringe is a kind of boundary**).
'in'+'fringe'='INFRINGE'
(Other definitions for infringe that I've seen before include "Encroach on (a right)" , "Contravene" , "Cross boundary" , "Refining so as to act against rule or agreement" , "Neglect to obey" .)