Dictionary

To tend steadily upward or downward.

Example: The road slopes sharply down at that point.

To form with a slope; to give an oblique or slanting direction to; to incline or slant.

Example: to slope the ground in a garden;   to slope a piece of cloth in cutting a garment

(usually followed by a preposition) To try to move surreptitiously.

Example: I sloped in through the back door, hoping my boss wouldn't see me.

To hold a rifle at a slope with forearm perpendicular to the body in front holding the butt, the rifle resting on the shoulder.

Example: The order was given to "slope arms".

That has or have a slope.