1. Geog.the end of the earth's axis of rotation, marking the northernmost point on the earth.
2. Astron.the point at which the extended axis of the earth cuts the northern half of the celestial sphere, about 1° from the North Star; the north celestial pole.
3. (l.c.) the pole of a magnet that seeks the earth's north magnetic pole.
4. (l.c.) See under magnetic pole (def. 1).