<p><strong>Verb</strong></p><ul><li>(used without object) to have or take an inclined or oblique direction or angle considered with reference to a vertical or horizontal plane; slant.</li><li>to move at an inclination or obliquely: They sloped gradually westward.</li></ul><p><strong>Noun</strong></p><ul><li>ground that has a natural incline, as the side of a hill.</li><li>inclination or slant, especially downward or upward.</li><li>deviation from the horizontal or vertical.</li><li>an inclined surface.</li><li>Usually slopes: hills, especially foothills or bluffs: the slopes of Mt. Kilimanjaro.</li><li>Mathematics: the tangent of the angle between a given straight line and the x-axis of a system of Cartesian coordinates; the derivative of the function whose graph is a given curve evaluated at a designated point.</li></ul>