Main Page | See live article | Alphabetical index A killer is a person, animal, object, plant (&c.) that kills. See also assassin. A killer is the lines, bars, grid, etc. applied to stampss on a letter to prevent their reuse (see also cancellation). Killer is a LRP game by Steve Jackson where players play assassins. Killer is the name of a psychobilly band. This is a disambiguation page. If you followed a link here, you might want to go back and fix the link, so that it points to the appropriate page. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.