brown rat 
brown rat
Definition
brown rat
noun
a common, omnivorous large rat (Rattus norvegicus) that swims and dives well, usually lives in underground burrows, and spreads various diseases: the mutant form, a white rat, is used for medical experiments
Browse dictionary entries near brown rat
- ‹ brown-nose
- ‹ brown lung (disease)
- ‹ Brown, Gordon
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- ‹ brown fat
- ‹ brown dwarf
- ‹ brown coal
- ‹ brown bread
- ‹ brown betty
- ‹ brown belt
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