Meaning of pack rat

pack' rat"

Pronunciation: [key]
  1. Also calleda large, bushy-tailed rodent, Neotoma cinerea, of North America, noted for carrying off small articles to store in its nest.
    1. a person who collects, saves, or hoards useless small items.
    2. an old prospector or guide.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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