NOUN (1)

1. the dead body of an animal that has been killed on a road by a vehicle;
- Example: "vultures usually feed on carrion or roadkill"

The Collaborative International Dictionary of English v.0.48:

roadkill \road"kill\, n. sing. & pl.
   The body of an animal killed by a vehicle on a road; as, it
   is illegal in most places for a restaurant to serve roadkill
   as food for people. Also used metaphorically; as, "roadkill
   on the information superhighway" (a person or corporation
   defeated by others more expert at using the internet).
   [PJC]