.

Consequently, can a meat grinder grind corn?

Won't work. You can try it, but corn is probably the hardest of the grains, and is difficult to grind. Meat grinder grinds meat, which compared to corn is quite soft. Not even all grain grinders will grind corn.

Subsequently, question is, what kind of corn is used to make cornmeal? field corn

Also to know, can you grind popcorn to make cornmeal?

With a good blender, such as a Blendtec or Vitamix blender you can grind regular popcorn into fresh corn meal or corn flour, and use for baking such as corn bread, muffins, polenta, tortillas, tamales, or frying.

Is field corn edible for humans?

Although not grown primarily for human consumption, people do pick ears of field corn when its sugar content has peaked and cook it on the cob or eat it raw.