The occult significance of Aquarius is knowledge. Aquarius, the sign of the water bearer, is an eminently revolutionary sign. There are four types of knowledge or secret science. We need to know what these four types of knowledge are.
Upper limb. The upper limb or upper extremity is the region in a vertebrate animal extending from the deltoid region to the hand, including the arm, axilla and shoulder.
extremity (plural extremities) 1  The most extreme or furthest point of something. 2  An extreme measure. 3  A hand or foot.  A limb (major appendage of human or animal such as a leg an arm or a wing)