Here is the dictionary definition of the noun 'animus' 1. An attitude that informs one's actions or disposition. 2. A feeling of animosity, ill will or enmity. 3. In Jungian psychology, it refers to the masculine inner personality that can be present in some women.

I will need to know the context in which it was used. It has a few meanings, that are all related. 1 - "animosity" - hostility or ill-will toward somebody 2 - motivation to do something 3 - spirit