1. [noun] An area of ground that tends evenly upward or downward.
2. [noun] The degree to which a surface tends upward or downward.
3. [noun] (mathematics) The ratio of the vertical and horizontal distances between two points on a line; zero if the line is horizontal, undefined if it is vertical.
4. [noun] (mathematics) The slope of the line tangent to a curve at a given point.
5. [noun] The angle a roof surface makes with the horizontal, expressed as a ratio of the units of vertical rise to the units of horizontal length (sometimes referred to as run).
6. [noun] (vulgar) (highly offensive) (ethnic slur) A person of Chinese or other East Asian descent.
7. [verb] (intransitive) To tend steadily upward or downward.
8. [verb] (transitive) To form with a slope; to give an oblique or slanting direction to; to incline or slant.
9. [verb] (colloquial) (usually followed by a preposition) To try to move surreptitiously.
10. [verb] (military) To hold a rifle at a slope with forearm perpendicular to the body in front holding the butt, the rifle resting on the shoulder.
11. [adjective] (obsolete) Sloping.
12. [adverb] (obsolete) slopingly
13. [noun] An elevated geological formation; 'he climbed the steep slope'; 'the house was built on the side of a mountain'.
14. [noun] The property possessed by a line or surface that departs from the horizontal; 'a five-degree gradient'.
15. [verb] Be at an angle; 'The terrain sloped down'.