Spiritual Meaning:
A cul-de-sac in spiritual terms suggests futility and sometimes lack of foresight.

Psychological / Emotional Perspective:
We are stuck in patterns of behaviour which give us no way out. We are being threatened by past mistakes.

Everyday Material Aspects:
When we find ourselves trapped in a cul-de-sac it symbolizes wasted action, but perhaps also a state of inertia. Circumstance may be preventing a forward movement, and it may be necessary to retrace our steps in order  to succeed.