black rat

black rat

noun
an Old World rat, Rattus rattus, now common in the southern U.S., having a black or brown body with grayish or white underparts.

Origin:
1765–75

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World English Dictionary
black rat
 
n
a common rat, Rattus rattus: a household pest that has spread from its native Asia to all countries

Collins English Dictionary - Complete & Unabridged 10th Edition
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