Some believe that the ghosts in their dreams are real representations of the dead. This is an unlikely explanation of such dreams. More likely, to dream of the ghost of someone who is departed represents a part of you that is unclear and that you do not understand. Ghosts can also be all that you have left of loved ones who are no longer alive, so they can offer you comfort by appearing in your dreams, representing a welcome opportunity to speak once again to that special person and to come to terms with the fact that they are gone. To dream of the ghost of someone who has died might also represent something that you wanted that is no longer in your reach. This dream is telling you to move on. Another explanation is that your unconscious was pointing out an uncomfortable truth that your conscious mind is working hard to repress, just as the ghost of his father appeared to Shakespeare’s Hamlet to tell him something that he may already have known—that his father was murdered by Hamlet’s new stepfather.
To dream of touching a ghost and having it disappear indicates that you are trying to confront and come to terms with painful memories. Demonic ghost images with no face or dark shadows (’dementors’, if you are a Harry Potter fan) may represent your negative tendencies, unpleasant parts of personality or your ’shadow’. Old superstition-based dream interpretations say that dreaming of friendly ghosts is a lucky omen, and that you should be receiving unexpected good luck. On the other hand, if you were very frightened by the ghost in your dream, then others will try to impose their will on you and you must be vigilant in order to stand up to it.... The Element Encyclopedia
Very much like the symbol of Mother, but much more oriented to the past.
The all-powerful mother, the archetypal mother (the mother principle) in contrast to the merely personal mother. Grandmothers, like Grandfathers, are often wise guides and advisers.... Little Giant Encyclopedia
To dream of a grandmother, or puri dai as the Gypsies call her, means that you are in need of help and advice.
The grandmother is the “old wise one’ of the family. She is always consulted when big decisions are to be made that affect the whole tribe. If, in your dream, she gives you advice . . . follow it! She will not be wrong.... Gypsy Dream Dictionary
Dreams of a grandmother represents the mature, wise, feminine elder within you; the one who tells the truth and loves you unconditionally.
If you dream of your actual grandmother, then this dream represents the qualities she represents uniquely to you and the feelings you have toward her. In general, dreams of a grandmother are about wisdom, the earth, nurturing and are a message to take care of your natural, earthly resources.... Strangest Dream Explanations
A grandmother in a woman’s dream may represent what Jung called the Great Mother who, like her male counterpart. Wise Old Man, represents wisdom - and power - in the ‘collective unconscious’, the part of the unconscious that is much older than the individual. Sometimes the conscious ego may have to struggle to prevent these archetypes from swallowing him or her up. See also Mother, Wise Old Woman and Introduction, pages 49-50.... A Dictionary of Dream Symbols