<p><strong>Noun</strong></p><ul><li>a natural elevation of the earth's surface, smaller than a mountain.</li><li>synonyms: foothill, hillock, knoll, mound, prominence, eminence.</li><li>antonyms: valley, hollow.</li><li>an incline, especially in a road: This old jalopy won't make it up the next hill.</li><li>an artificial heap, pile, or mound: a hill made by ants.</li><li>a small mound of earth raised about a cultivated plant or a cluster of such plants.</li><li>the plant or plants so surrounded: a hill of potatoes.</li><li>Baseball: mound.</li><li>the Hill: Capitol Hill.</li></ul><p><strong>Verb</strong></p><ul><li>to surround with hills: to hill potatoes.</li><li>to form into a hill or heap.</li></ul>