Keys are used to unlock something and as a result can often symbolize the tool necessary to unlock an idea, unlock what binds a person or unlock a door to new opportunities among other things. Keys can also represent an important concept or vital component of something.
* Symbol meanings provided by www.mydreamstories.com should not be used as a dream dictionary. They are for reference only and both dreamer and interpreter should be careful to listen to the voice of Holy Spirit as to what any particular symbol means in any specific dream.