Anything that's uncooked is raw, like an uncooked tomato eaten right off the vine in the garden or the bite of uncooked cookie dough you sneak from the mixing bowl.
Use the adjective uncooked to describe any food that hasn't been heated at all — not in an oven, a microwave, or on the backyard grill. It's particularly common to describe food as uncooked if it's actually meant to be cooked. Don't eat that uncooked chicken, and don't feed it to your dog — it's not safe for you or Fluffy!