Body of vehicle crushed at the front and behind (7)
I believe the answer is:
carcass
'body' is the definition.
(carcass is a kind of body)
'vehicle crushed at the front and behind' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'at the front' suggests taking the first letters.
'and' says to put letters next to each other.
'behind' becomes 'ass' (synonyms).
The first letter of 'crushed' is 'c'.
'car'+'c'+'ass'='CARCASS'
'of' acts as a link.
(Other definitions for carcass that I've seen before include "Dead animal's body" , "Framework" , "Dead body of animal" .)