[Usenet] Per-user file(s) used by some Usenet reading programs (originally Larry Wall' s rn) to discard summarily (without presenting for reading) articles matching some particularly uninteresting (or unwanted) patterns of subject, author, or other Header lines. Thus to add a person (or subject) to one' s kill file is to arrange for that person to be ignored by one' s newsreader in future. By extension, it may be used for a decision to ignore the person or subject in other media. See also plonk. [Jargon File]