1. Geog. the southern end of the earth's axis, the southernmost point on earth.
2. Astron. the point at which the axis of the earth extended cuts the southern half of the celestial sphere; the south celestial pole.
3. ( l.c. ) the pole of a magnet that seeks the earth's south magnetic pole.
4. ( l.c. ) See under magnetic pole (def. 1).
[ 1585-95, for def. 1 ]