woodratDefinition of woodrat noun 1a rat-like rodent that accumulates a mound of sticks and debris in the nest hole, native to North and Central America. Also called pack rat.Neotoma and other genera, family Muridae: many species 2 (usually wood rat) a forest-dwelling rat found in southern Asia. Rattus, Cremnomys, and other genera, family Muridae woodrat in other Oxford dictionaries Definition of woodrat in the US English dictionary