a natural elevation of land, or a mass of earth rising above the common level of the surrounding land; an eminence less than a mountain.-the earth raised about the roots of a plant or cluster of plants. [u. s.] see hill, v. t.-a single cluster or group of plants growing close together, and having the earth heaped up about them; as, a hill of corn or potatoes.-to surround with earth; to heap or draw earth around or upon; as, to hill corn.