Hit back, right? (4,3)
I believe the answer is:
rear end
This might be a double definition.
'hit' is the first definition.
(I know that rear-end is a more specific form of hit)
'back right?' is the second definition.
'rear end' can be an answer for 'back' (thesaurus). I am not certain of the 'right?' bit.
Can you help me to learn more?
(Other definitions for rear end that I've seen before include "The buttocks (colloq.)" , "Run into another vehicle from behind" , "Crash into back of another vehicle" , "run into the car in front" , "seat" .)