Source : Webster's Revised Unabridged Dictionary (1913)

Label \La"bel\, n. [OF. label sort of ribbon or fringe, label in
   heraldry, F. lambeau shred, strip, rag; of uncertain origin;
   cf. L. labellum, dim. of labrum lip, edge, margin, G. lappen
   flap, patch, rag, tatter (cf. {Lap} of a dress), W. llab,
   llabed, label, flap, Gael. leab, leob, slice, shred, hanging
   lip.]
   1. A tassel. [Obs.] --Huloet. Fuller.

   2. A slip of silk, paper, parchment, etc., affixed to
      anything, usually by an inscription, the contents,
      ownership, destination, etc.; as, the label of a bottle or
      a package.

   3. A slip of ribbon, parchment, etc., attached to a document
      to hold the appended seal; also, the seal.

   4. A writing annexed by way of addition, as a codicil added
      to a will.

   5. (Her.) A barrulet, or, rarely, a bendlet, with pendants,
      or points, usually three, especially used as a mark of
      cadency to distinguish an eldest or only son while his
      father is still living.

   6. A brass rule with sights, formerly used, in connection
      with a circumferentor, to take altitudes. --Knight.

   7. (Gothic Arch.) The name now generally given to the
      projecting molding by the sides, and over the tops, of
      openings in medi[ae]val architecture. It always has a
      ?quare form, as in the illustration. --Arch. Pub. Soc.

   8. In medi[ae]val art, the representation of a band or scroll
      containing an inscription. --Fairholt.

Label \La"bel\, v. t. [imp. & p. p. {Labeled}or {Labelled}; p.
   pr. & vb. n. {Labeling} or {Labelling}.]
   1. To affix a label to; to mark with a name, etc.; as, to
      label a bottle or a package.

   2. To affix in or on a label. [R.]

Source : WordNet®

label
     n 1: a brief description given for purposes of identification;
          "the label Modern is applied to many different kinds of
          architecture"
     2: trade name of a company that produces musical recordings;
        "the artists and repertoire department of a recording
        label is responsible for finding new talent" [syn: {recording
        label}]
     3: a radioactive isotope that is used in a compound in order to
        trace the mechanism of a chemical reaction
     4: an identifying or descriptive marker that is attached to an
        object
     v 1: assign a label to; designate with a label; "These students
          were labelled `learning disabled'"
     2: attach a tag or label to; "label these bottles" [syn: {tag},
         {mark}]
     3: pronounce judgment on; "They labeled him unfit to work here"
        [syn: {pronounce}, {judge}]
     4: distinguish (as a compound or molecule) by introducing a
        labeled atom
     5: distinguish (an element or atom) by using a radioactive
        isotope or an isotope of unusual mass for tracing through
        chemical reactions
     [also: {labelling}, {labelled}]