any of various small and medium-sized kangaroos of the genera Macropus, Thylogale, Petrogale, etc., some of which are no larger than rabbits: several species are endangered.
wal·la·by (wŏl'ə-bē) n.
pl.wal·la·bies or wallaby Any of various marsupials of the genus Wallabia and related genera, of Australia and adjacent islands, related to the kangaroos but generally smaller and often having a colorful coat.