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roof rat

a black rat, Rattus rattus alexandrinus, often found on the upper floors of buildings in warm areas.
Origin of roof rat
First recorded in 1810-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for roof rat
Historical Examples
  • He also states that the black rat and the roof rat (Alexandrinus), both varieties of M. rattus, differ chiefly in color.

    Plague Thomas Wright Jackson
  • The roof rat is common in many parts of the South, where it is a persistent pest in cane and rice fields.

    House Rats and Mice David E. Lantz

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