Erethizon
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Noun | 1. | Erethizon - a genus of Erethizontidae mammal genus - a genus of mammals Erethizontidae, family Erethizontidae - New World arboreal porcupines Canada porcupine, Erethizon dorsatum - porcupine of northeastern North America with barbed spines concealed in the coarse fur; often gnaws buildings for salt and grease |
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