superman

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A man with more than human powers.
• noun An ideal superior man who, according to Nietzsche, forgoes transient pleasure, exercises creative power, lives at a level of experience beyond standards of good and evil, and is the goal of human evolution.

from The Century Dictionary.

• noun An imaginary superior being, the product of human evolution: conceived and vaguely characterized by Nietzsche: also used in a general sense. See the second extract.

from the GNU version of the Collaborative International Dictionary of English.

• noun same as overman, above.
• noun a fictional character of cartoons, movies and television, with superhuman powers such as great strength, the ability to fly, and x-ray vision. In the cartoon tale, he was born on the planet Krypton and sent by his parents into space before it exploded, and landed on earth, where he fights for "truth, justice, and the American way". He works incognito as a reporter at the Daily Planet, and is constantly trying to avoid the uncovering of his secret identity by a co-worker, Lois Lane.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An imagined superior type of human being representing a new stage of human development; übermensch.
• noun A person of extraordinary or seemingly superhuman powers.
• noun A motorcycling stunt in which the rider releases both hands from the handlebars in mid-air.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a person with great powers and abilities
• noun street name for lysergic acid diethylamide