Animus may stand for:
Carl Jung believed that we each have within us both male and female qualitites, which together comprise the totality of who we are. The animus is the archetype in a woman that represents her male alter ego. It is the personification of the masculine qualities in a woman's psyche. These qualities may include rationality, authority, objectivity, initiative, courage, conviction, action, aggression, and brutality. The animus has been described as producing opinions, in contrast with the anima, which produces moods.
In the anime FLCL (fooly cooly)the main caracter turns into animus the ultimate meta-mechanical creation after being "eaten" by first meta-mechanicle robot spawned from his head.
References: The Art of Dream Interpretation - A Guide to Using the Dream Symbol Cards by Belinda Recio and Eileen London. Word for word of the Animus card.