Black Key in dreams
Access. The answer to a question you have been holding for a while.
How black changes the reading
The base reading of Key
A key in a dream is an answer or a piece of access you have been waiting for. Finding a key on waking life is usually the dictionary's signal that something has clicked into place — even if you cannot yet name what it has unlocked.
Losing a key is the inverse — you had access and have somehow let it slip. Try to remember what door the key was for; the dream is more specific than it appears.
A broken key is a partial answer — close enough to recognize the shape of, not yet enough to act on.
Where you often see it. A key that does not fit its lock. A key found unexpectedly. The dream uses the key for access — the answer to a question you have been holding for a while.
What it is not. A key is not always literal access. The dictionary often reads it as the dreamer's recently-found understanding.
Related in the dictionary. Read key with door, lock, and any scene of newly possible passage.