mole rat

(historical) An enclosed space into which rats are placed to be killed by a dog for sport.

A blood sport involving the setting of dogs upon rats in a confined space.

(historical) A member of a Gwich'in (Athabascan) tribe dwelling near Fort Yukon, Alaska.

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.

(UK, military, slang) A ration pack.

(US, dated, slang) A juvenile criminal gang.

Alternative spelling of ratfolk

plural of Rat Indian

The brown rat (Rattus norvegicus). / (derogatory) A base and contemptible person. / Used other than figuratively or idiomatically: Any rat that lives in sewers.