Light Bulb – A light bulb is a dream symbol of understanding and knowledge. Turning on the light bulb in a room is indicative of understanding the reality around you and being able to interact with it effectively and with full understanding. On the other hand, if you try to turn on the light bulb and the light does not come on, or if it comes on but is too dim to see much, this is an indication of a lack of understanding. At some point, your ability to gain knowledge about a matter is being frustrated, and your subconscious mind is aware that you are not able to gain this knowledge. Any people and places involved with this dream symbol are also highly significant. For instance, if this dream occurs in your childhood home, this points the finger at your parents being the ones to “keep you in the dark,” while if it happens in a workplace, it is likely that a boss or a coworker is keeping information from you.