Any of many medium to large colubrid constrictors of a kind found through a great portion of the Northern Hemisphere, primarily feeding on rodents and birds.

A pit filled with snakes. / (figuratively) Any institution (such as a school, prison, hospital, etc.) run in an inept or inhumane way, or full of hostile or treacherous people.

plural of snake pit

Any of various primitive aquatic snakes in the monotypic family Acrochordidae (the single genus Acrochordus).

Thamnophis sauritus, a common garter snake endemic to eastern North America.

Agkistrodon contortrix laticinctus, the broad-banded copperhead. / Agkistrodon contortrix mokasen, the northern copperhead. / Lampropeltis getula getula, the eastern kingsnake.

Any of various North American colubrid snakes.

Synonym of Armenian cucumber

A snake of the genus Drymarchon, species of which are found the southeastern US, Texas, and northern South America.

Any species of Pseudechis, a genus of Australian snakes. / Crotalus oreganus, a venomous North American pit viper species of snake.