Source : Webster's Revised Unabridged Dictionary (1913)

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}]

labelling
     See {label}