lešina

1. (of an animal) carcass; carrion
   Pored puta je ležala lešina psa. — A dog's carcass was lying by the road.
   Lešinari se hrane lešinama. — Vultures feed on carrion.
2. derog. (of a person) corpse; dead body
   Posle bitke polje je bilo puno lešina. — After the battle the field was full of corpses.

For a human body the neutral word is leš; lešina sounds crude.