kill file /ˈkɪl ˌfaɪ̯l/noun 1verb 1forms 4 noun1 •(Internet) A user's file listing the users of a newsgroup whose postings are to be ignored, or other criteria for ignoring posts. verb1 •(Internet) To add (a user) to a kill file. formskill filed · kill filing · kill files · kill-files
