Hit dog biting daughter (7)
I believe the answer is:
collide
'hit' is the definition.
(colliding is a kind of hitting)
'dog biting daughter' is the wordplay.
'dog' becomes 'collie' (collie is a kind of dog**).
'biting' is an insertion indicator (I've seen this in other clues).
'daughter' becomes 'd'.
'collie' placed around 'd' is 'COLLIDE'.
(Other definitions for collide that I've seen before include "Dash together; clash" , "Come into conflict" , "Smash together" , "Hit" , "Clash; conflict" .)