- any phalanger of the genus Pseudocheirus, having the prehensile tail curled into a ring.
- Also called ringsail. Nautical. a narrow studdingsail set abaft a gaff sail, especially a spanker, upon spears extending beyond the gaff and boom.
- Also called: ring-tailed cat another name for cacomistle
- Also called: ringtail possum Australian any of several possums having curling prehensile tails used to grasp branches while climbing