kill file

kill file n.  [Usenet] (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}.