\Hade\, n. [Cf. heald inclined, bowed down, G. halde
declivity.]
1. The descent of a hill. [Obs.]
2. (Mining) The inclination or deviation from the vertical of
   any mineral vein.

\Hade\, v. i. (Mining)
To deviate from the vertical; -- said of a vein, fault, or
lode.

\Hade\, n. (Geol. & Mining)
The deviation of a fault plane from the vertical.
Note: The direction of the hade is the direction toward which
      the fault plane descends from an intersecting vertical
      line.