Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
See brown rat.
(Animals) another name for brown rat
an Old World rat, Rattus norvegicus, having a grayish brown body and a long, scaly tail: introduced worldwide. Also called brown rat.
Switch to new thesaurus
|Noun||1.||Norway rat - common domestic rat; serious pest worldwide|
rat - any of various long-tailed rodents similar to but larger than a mouse
wharf rat - brown rat that infests wharves
sewer rat - brown rat commonly found in sewers