pulp, pulpa 1. A soft, fleshy inner part of a plant or animal; such as, that within a tooth, the spleen, or a fruit. 2. Soft or fleshy plant tissue; such as, the inner part of a fruit or vegetable. 3. The pith inside a plant stem. 4. A soft or soggy mass. 5. Pulverized animal or vegetable matter. 6. The sensitive tissue at the center of a toot... Found on http://www.wordinfo.info/words/index/info/view_unit/1794/