rathole
noun
High School
1
An entrance to a living area or passageway used by mice or rats.
2
A living area used by mice or rats, or a similar living area used by other animals.
3
A particularly squalid human residence or other place.
4
An area of a silo that has undergone ratholing, so that material moves mostly through the centre and accumulates around the edges.
5
A pigeonhole.