Title on a PC?

• Storage label of a sort
• Dot preceder
• Label in a folder
• Identifier in a folder
• Data identifier
• Title on a hard drive
• It's often followed by .pdf
• Computer document identifier

Wikipedia Word definitions in Wikipedia
A filename (also written as two words, file name ) is a name used to uniquely identify a computer file stored in a file system . Different file systems impose different restrictions on filename lengths and the allowed characters within filenames. A filename ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun COLLOCATIONS FROM CORPUS ■ ADJECTIVE valid ▪ If the message Not a valid filename appears, your filename does not obey the rules. ■ VERB use ▪ I used the filename PMMLIB.GIMMSJOB1 to hold the Job Control commands. EXAMPLES FROM CORPUS ▪ Check that you ...