The Collaborative International Dictionary of English v.0.48:

Label \La"bel\, v. t. [imp. & p. p. Labeled (l[=a]"b[e^]ld) 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.
      [1913 Webster]

   2. To affix in or on a label. [R.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

labelled
    adj 1: bearing or marked with a label or tag; "properly labeled
           luggage" [syn: labeled, labelled, tagged] [ant:
           unlabeled, unlabelled, untagged]