An undead soul, possessed and sent out of the grave to thrive upon the
flesh of the living.
After a dead body rots underground for a time, it may come to life, first its eyes will reopen, and fingers will begin twitching. The thumping of the heart may return, unless the heart has been removed. This is the rebirth of a human, the birth of a zombie.
Deteriorating, fallen apart and reaking of the foul stench of death, a zombie will raise from the grave by smashing through the coffin and lifting an arm out of the ground, in the normal
zombie style. The zombie will proceed to lift itself out of the soil and moan, usually moaning anything like 'Yaaarghhh...' or 'BRAINS!'
If you fall victim to the
zombie's feasting of your flesh and brain, you will become a zombie, forever walking, undead.