(1) A name.
(2) For mass storage devices, a label is the name of a storage volume. It is sometimes referred to as a volume label. Each operating system has its own set of rules for labeling volumes. The label provides a mnemonic name that indicates what type of information is stored on the media.
(3) In spreadsheet programs, a label is any descriptive text placed in a cell.
(4) In programming languages, a label refers to a particular location in a program, usually a particular line of source code.
(5) The term label is also commonly used to mean a small, sticky piece of paper that you can place on an object to identify it. For example, you can paste labels on floppy disks to indicate what datais stored on them.