To dream of a hollow circle represents a cycle. A situation or problem that keeps repeating itself. Something ongoing or that never ends. Infinity or continuity.
To dream of a solid represents perfection or a situation that does something perfectly. Negatively, a solid circle may reflect a problem that perfectly cancels out positivity or everything that feels good.
To dream of walking in represents feelings of frustration that you can’t make any progress. It may also reflect circular thinking or being unable to stop thinking about a certain issue over and over. Problems making a decision or taking action.
To see a circle with a cross in it represents a perfect sacrifice or sacrificial attitude. Everything is being done to get rid of something negative.
Consider the color of the for additional meaning.
Example: A man dreamed of walking around in . In waking life he was investigating whether or not his wife had cheated on him and couldn’t come to any certain conclusions. He just kept reexamining the issue over and over with no answers.