What does "slope" mean?

Additional senses

1. 2.(Rev. Ver.). Note: 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.
2. 3.Sloping. "Down the slope hills." Milton. A bank not steep, but gently slope. Bacon.
3. 4.In a sloping manner. [Obs.] Milton.
4. 5.To form with a slope; to give an oblique or slanting direction to; to direct obliquely; to incline; to slant; as, to slope the ground in a garden; to slope a piece of cloth in cutting a garment.
5. 6.To take an oblique direction; to be at an angle with the plane of the horizon; to incline; as, the ground slopes.
6. 7.To depart; to disappear suddenly. [Slang]