“hill” – English explanatory dictionary

noun a piece of high land, but lower than a mountain (informal.) ○ The hills are covered with spring flowers. ○ If you climb to the top of the hill you will get a good view of the valley.

n. [OE. hil, hul, AS. hyll; akin to OD. hille, hil, L. collis, and prob. to E. haulm, holm, and column. Cf. 2d Holm.]
1. 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. “Every mountain and hill shall be made low.” Is. xl. 4.
2. The earth raised about the roots of a plant or cluster of plants. [U. S.] See Hill, v. t.
3. 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. [U. S.] Hill ant (Zoöl.), a common ant (Formica rufa), of Europe and America, which makes mounds or ant-hills over its nests. — Hill myna (Zoöl.), one of several species of birds of India, of the genus Gracula, and allied to the starlings. They are easily taught to speak many words. [Written also hill mynah.] See Myna. — Hill partridge (Zoöl.), a partridge of the genus Aborophila, of which numerous species in habit Southern Asia and the East Indies. — Hill tit (Zoöl.), one of numerous species of small Asiatic singing birds of the family Leiotrichidae. Many are beautifully colored.

v. t. [imp. & p. p. Hilled p. pr. & vb. n. Hilling.] To surround with earth; to heap or draw earth around or upon; as to hill corn. “Showing them how to plant and hill it.” Palfrey.