Pronunciation: (mi-räzh'), [key]
1. an optical phenomenon, esp. in the desert or at sea, by which the image of some object appears displaced above, below, or to one side of its true position as a result of spatial variations of the index of refraction of air.
2. something illusory, without substance or reality.
3. (cap.) Mil.any of a series of supersonic, delta-wing, multirole French fighter-bombers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.