alien
1. a person owing allegiance to a country other than that in which he lives; foreigner
2. (in science fiction) a being from another world, sometimes specifically an extraterrestrial
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
What does it mean when you dream about aliens?
An alien in a dream may indicate that there is difficulty adjusting to new conditions or a new environment. Space aliens may indicate issues about ones boundaries; the dreamer may feel his or her personal life is being invaded.
The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.
Alien
(dreams)Occasionally, people will have dreams about UFOs and aliens. What these dreams symbolize, collectively or individually, is difficult to explain and understand. Meeting and talking to aliens may suggest that significant changes are coming into your life and, at the moment, things feel strange and foreign to you. If you dream that you are the alien, it suggests that you may feel detached from some parts of yourself and from others. You may be a stranger in your immediate surroundings, and some self-evaluation and familiarization is suggested.
Bedside Dream Dictionary by Silvana Amar Copyright © 2007 by Skyhorse Publishing, Inc.