The Collaborative International Dictionary of English v.0.48:

Tag \Tag\, n. [Probably akin to tack a small nail; cf. Sw. tagg
   a prickle, point, tooth.]
   1. Any slight appendage, as to an article of dress; something
      slight hanging loosely; specifically, a direction card, or
      label.
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   2. A metallic binding, tube, or point, at the end of a
      string, or lace, to stiffen it.
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   3. The end, or catchword, of an actor's speech; cue.
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   4. Something mean and paltry; the rabble. [Obs.]
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   Tag and rag, the lowest sort; the rabble. --Holinshed.
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   5. A sheep of the first year. [Prov. Eng.] --Halliwell.
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