To see a grate in your dream signifies your need to release and channel your emotions. You should not kept you feelings inside. Alternatively, this dream may represent a wasted effort, or something that is “grating” on your nerves.
Psychological / emotional perspective: When we dream of emigrating we are leaving behind the known for the unknown. Implicit in this is the idea of new experiences, new ways of thought and new friends.
The method of emigration – train, plane or other means – may be important.... Dream Meanings of Versatile
Material aspects: In the ordinary everyday world we do not often have the opportunity to make radical changes. Dreaming of emigration alerts us to the possibility of leaving a situation we are in and doing something completely different.... Dream Meanings of Versatile