Also found in: Medical.
1. slang The (usually flattened) remains of dead animal in the road after having been struck and killed by a motor vehicle; roadkill. There were more road pizzas than we could count along that stretch of the highway.
2. slang The victim of a car accident whose body is badly mutilated. Be sure to wear your seatbelt. You don't want to end up as a road pizza, do you?
n. a dead animal on the road. A bunch of crows were feasting on road pizza when we drove by.