Defn: Any one of several species of kangaroos of the genus Macropus, especially M. robustus, sometimes called the great wallaroo.

WALLBIRD
Wall"bird`, n. (Zoöl.)

Defn: The spotted flycatcher. [Prov. Eng.]

WALLER
Wall"er, n.

Defn: One who builds walls.

WALLER
Wall"er, n. Etym: [G.] (Zoöl.)

Defn: The wels.

WALLERIAN DEGENERATION
Wal*le"ri*an de*gen`er*a"tion. (Med.)

Defn: A form of degeneration occurring in nerve fibers as a result of their division; — so called from Dr. Waller, who published an account of it in 1850.

WALLET Wal"let, n. Etym: [OE. walet, probably the same word as OE. watel a bag. See Wattle.]