- opossum.
- any of various phalangers, especially of the genus Trichosurus.
- play possum, Informal.
- to feign sleep or death.
- to dissemble or pretend ignorance: The baseball broke the window, but the children played possum when asked who had thrown it.
- an informal name for opossum (def. 1)
- any of various Australasian arboreal marsupials, such as Trichosurus vulpecula (brush-tailed phalanger), having dense fur and a long tail: family Phalangeridae
- to pretend to be dead, ignorant, asleep, etc, in order to deceive an opponent
