Main Page | See live article | Alphabetical index Halo can refer to: Halo - a circular glow around the head in Christian art. halo (optical phenomenon) - an optical phenomenon. HALO - a military parachuting technique. Halo: Combat Evolved - a game for the Xbox game console. Halo - designation given to every Nine Inch Nails official release —singles, remixes and/or EPs— where the Halo number indicates the order in which they were released. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.