Definitions
1.nounWaterfall (permanent flow of water over the edge of a cliff).
2.nounA pit, groove, cavity, or depression.
3.nounA long, narrow, shallow depression on the body of an extraterrestrial body, such as a planet or moon.
4.nounA carnivorous mammal endemic to Madagascar, Cryptoprocta ferox.
5.nounA ditch or moat.