From Longman Dictionary of Contemporary Englishfilenamefile‧name /ˈfaɪlneɪm/ noun [countable] the name you give to a particular computer file
Examples from the Corpus
filename• Firstly - presuming you have a batch file to run Ability Plus - type in the batch filename.• If no output filename is specified, any errors detected will still be written to the scrolled area.• You should work out what your needs are and compile a list of suitable filename extensions.• Enter Y to create or Esc to cancel appears, the filename has not been used.• Check that you have typed exactly the filename you wanted.From Longman Business Dictionaryfilenamefile‧name /ˈfaɪlneɪm/ noun [countable]COMPUTING the name that you give to a computer FILE and which you use when you want to open it, remove it, put it on disk etcEnter the filename, or press F1 for a list of available filenames. 