Phalanger \Pha*lan"ger\, n. [Cf. F. phalanger. See Phalanx.]

(Zo["o]l.) Any marsupial belonging to Phalangista, Cuscus, Petaurus, and other genera of the family Phalangistid[ae]. They are arboreal, and the species of Petaurus are furnished with lateral parachutes. See Flying phalanger, under Flying.

Source: Webster's Revised Unabridged Dictionary (1913)