Pole \Pole\, n. [L. polus, Gr. ? a pivot or hinge on which
   anything turns, an axis, a pole; akin to ? to move: cf. F.
   p[^o]le.]
   1. Either extremity of an axis of a sphere; especially, one
      of the extremities of the earth's axis; as, the north
      pole.
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   2. (Spherics) A point upon the surface of a sphere equally
      distant from every part of the circumference of a great
      circle; or the point in which a diameter of the sphere
      perpendicular to the plane of such circle meets the
      surface. Such a point is called the pole of that circle;
      as, the pole of the horizon; the pole of the ecliptic; the
      pole of a given meridian.
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   3. (Physics) One of the opposite or contrasted parts or
      directions in which a polar force is manifested; a point
      of maximum intensity of a force which has two such points,
      or which has polarity; as, the poles of a magnet; the
      north pole of a needle.
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   4. The firmament; the sky. [Poetic]
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            Shoots against the dusky pole.        --Milton.
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   5. (Geom.) See Polarity, and Polar, n.
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   Magnetic pole. See under Magnetic.

   Poles of the earth, or Terrestrial poles (Geog.), the two
      opposite points on the earth's surface through which its
      axis passes.

   Poles of the heavens, or Celestial poles, the two
      opposite points in the celestial sphere which coincide
      with the earth's axis produced, and about which the
      heavens appear to revolve.
      [1913 Webster] Poleax