What is the meaning of dreaming of a crown?

A crown is a tangible symbol of royalty, nobility, power and authority. It may be the prize presented to a beauty queen or winner of some sort of competition. So your dream of a crown is a dream of achieving what that crown represents, whether power or beauty or a high position of some kind. Alternatively, the crown in this dream could be a play on Words, referring to a different sort of "crown" altogether. For example, you may be about to lose a dental crown from one of your teeth.