To bend or move (something) out of a given plane or direction, often the horizontal or vertical.
To tend to do or believe something, or move or be moved in a certain direction, away from a point of view, attitude, etc.
To slope.
A portal of a subway tunnel.
A slope.
A structural principle of mathematical logic that states that the hypotheses of any derived fact may be freely extended with additional assumptions.
An instance or process of loss of strength.