A graverobber.
A person with a callous or uncaring attitude to human life and suffering, particularly when prioritising economic concerns.
A demon said to feed on corpses.
A person with an undue interest in death and corpses, or more generally in things that are revolting and repulsive.
A zombie.
Something Z-shaped.
The name of the Latin-script letter Z.
Sleep.
To sleep or nap. (Compare zzz, catch some z's.)
To zigzag; to move with sharp alternating turns.