The Collaborative International Dictionary of English v.0.48:

Tag \Tag\, v. t. [imp. & p. p. Tagged; p. pr. & vb. n.
   Tagging.]
   1. To fit with, or as with, a tag or tags.
      [1913 Webster]

            He learned to make long-tagged thread laces.
                                                  --Macaulay.
      [1913 Webster]

            His courteous host . . .
            Tags every sentence with some fawning word.
                                                  --Dryden.
      [1913 Webster]

   2. To join; to fasten; to attach. --Bolingbroke.
      [1913 Webster]

   3. To follow closely after; esp., to follow and touch in the
      game of tag. See Tag, a play.
      [1913 Webster]

WordNet (r) 3.0 (2006):

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