Roadblock 
To dream of a roadblock denotes challenges in your career or personal life. You can still increase your level of determination in trying to conquer the obstacles that come your way.
Barrier
To dream about a barrier symbolizes a hurdle in the way of your maturity. You might have trouble making your feelings known. The barrier could also be a symbol of not wanting something different to happen.
Barbed Wire
To dream about barbed wire signifies barriers. You may have a hard time expressing yourself.
To dream that you are trapped in barbed wire means that you feel hemmed in and confined in some way.
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