What is "eastern grey kangaroo"

n. A species of kangaroo, with a distinctive soft grey coat, ''Macropus giganteus''

The eastern grey kangaroo (Macropus giganteus) is a marsupial found in southern and eastern Australia, with a population of several million. It is also known as the great grey kangaroo and the Forester kangaroo. Although a big eastern grey male typically masses around 66 kg (weight 145 lb.) and stands almost 2 m (6.6 ft.) tall, the scientific name, Macropus giganteus (gigantic large-foot), is misleading: the red kangaroo of the semi-arid inland is larger, weighing up to 90 kg.