an individual who helps or cooperates with another; a supporter or associate; a friend. In Dianetics, it basically means someone who protects a person who is in a weak state and becomes a very strong influence over the person. The weaker person, such as a child even partakes the characteristics of the ally s o that one may find that a person who has for instance a bad leg, has it because a protector or ally in his youth had a bad leg. —HDA Tapes (Oakland Lectures) Approved Glossary (16.4.92)