SLOPE

slope. Slope, a. oblique, slanting, shelving, declining

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Slope (?), n. [[Formed (like abode fr. abide) from OE. slipen. See Slip, v. i.]] 1. 1. An oblique direction; a line or direction including from a horizontal line or direction; also, sometimes, an inclination, as of one line or surface to another.
2. 2. Any ground whose surface forms an angle with the plane of the horizon.
buildings the summit and slope of a hill. Macaulay. Under the slopes of Pisgah. Deut. iv. 49. (Rev. Ver.). ☞ A slope, considered as descending, is a declivity; considered as ascending, an acclivity. Slope of a plane (Geom.), the direction of the plane; as, parallel planes have the same slope.