Zombies are animated corpses that come back to life without consciousness or self-awareness. The Night of the Living Dead film made zombies synonymous with the drooling, "braaaaiiin"-mumbling creatures often seen in fiction now, but the name "zombie" comes from Haitian Creole and South African words.
And now we're at Z! And April is ending! And...thank you, all you cool people I've met! You rock!