At a given point, the angle between the line connecting this point with the geographical center of the earth and the equatorial plane.
At a given point, the angle between magnetic north and true north.
A refusal.
The downward slope of a hill; the downward slope of a curve.
A downward bend in a path.
An inward curve of the exoskeleton of an insect, such as between body segments; a segment of an insect's body where the exoskeleton curves inward.