Tarantula

The key to interpretation of this dream is to understand there are females around you at the moment that are extremely powerful.
The tarantula is also associated with entrapment. If you kill the tarantula, this signifies that you are able to work yourself through the feeling of being trapped. Maybe you are starting to feel trapped in your job or a relationship. The second interpretation is feeling that you are stepping away from a situation that has been difficult in the past, and that you have the power and force in order to mold behavior towards others.