an idea or mental image of something:
We see in his novels his sinister, almost apocalyptic, vision of the future.
Johnny was late home and, as usual, I had visions of him lying dead in some alley.
[ C ] an experience in which you see things that do not exist physically, when your mind is affected powerfully by something such as deep religious thought or drugs or mental illness:
She had visions in which the angel Gabriel appeared to her