fsck /fʌsk/exclamation 1noun 1verb 1forms 3 exclamation1 •(Internet, vulgar) Fuck.At some point in your Linux career you should ask yourself: "If there are 3.4 million successful, happy Mandrake users...what the fsck is wrong with me?" — 2002 noun1 •A *nix file system check to detect damage to, or corruption of, files or filesystem structures. verb1 •To run fsck on; to perform a fsck on. formsfscked · fscking · fscks