The Ghost card has many meanings. Most commonly, it is a call to face your fears. Or your past. Look at what is haunting you and see that it is likely distorted and unreal.
The Ghost card can also signify connecting with spirit. It stands for the ephemeral, the veil to the intangible world. It can be a call to communicate with passed ancestors or just The Universe in general. Everything is connected by energy.
More Meanings:
Take a look at what is no longer relevant, open to what is greater, the supernatural, illusion, obscurity, concerns, reconciliation, scary, unreal, fleeting, transparent.