tagger
  垂下物,尾隨者,薄鐵片,附加物
  Tag·ger n.
  1. One who, or that which, appends or joins one thing to another.
  2. That which is pointed like a tag.
     Hedgehogs' or procupines' small taggers.   --Cotton.
  3. pl. Sheets of tin or other plate which run below the gauge.
  4. A device for removing taglocks from sheep.
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