Southing :: Southing (n.) Tendency or progress southward; as, the southing of the sun..
Southing :: Southing (n.) The time at which the moon, or other heavenly body, passes the meridian of a place..
Southing :: Southing (n.) Distance of any heavenly body south of the equator; south declination; south latitude.
Southing :: Southing (n.) Distance southward from any point departure or of reckoning, measured on a meridian; -- opposed to northing..