kill file

kick | = K = | killer app

kill file n.

[Usenet; very common] (alt. `KILL file') Per-user file(s) used by some Usenet reading programs (originally Larry Wall's `rn(1)`) 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.

kick | = K = | killer app