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From: Webster's Revised Unabridged Dictionary (1913)

 Pole, n.
 1. Either extremity of an axis of a sphere; especially, one of the extremities of the earth's axis; as, the north pole.
 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.
 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.
 4. The firmament; the sky. [Poetic]
    Shoots against the dusky pole.   --Milton.
 5. Geom. See Polarity, and Polar, n.
 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.