1. A creature that resembles the slow-walking evil brown mushroom that can be squashed in the videogame Mario Bros (called a goomba), but moves much quicker at a jogging or running pace.
2. An evolved species of aggressive zombie that has acquired the ability to move quickly and decisively, as opposed to old-fashioned snail-paced zombies.
“I think the machete is a wise choice. These zoombas are way too fast to hit with the conventional zombie sniper rifle.”